Sleep Guides by Age
3-Month Sleep Guide
Your 3-month-old is emerging from the newborn fog. Here's what to expect for sleep patterns, wake windows, and naps.
4-Month Sleep Guide
The 4-month mark brings big changes to your baby's sleep architecture. Here's how to navigate the transition and establish healthy habits.
5-Month Sleep Guide
At 5 months your baby is settling into a more predictable rhythm. Learn about ideal wake windows, the 3-nap schedule, and how to handle com…
6-Month Sleep Guide
Everything you need to know about your 6-month-old's sleep patterns, wake windows, and the transition to fewer naps.
7-Month Sleep Guide
At 7 months your baby is becoming more mobile and alert. Here's how to keep sleep on track as new skills emerge.
8-Month Sleep Guide
Separation anxiety and new mobility can shake up sleep at 8 months. Here's how to keep your schedule steady.
9-Month Sleep Guide
Your 9-month-old is increasingly mobile and opinionated. Here's how to navigate sleep as your baby asserts their independence.
10-Month Sleep Guide
At 10 months, your baby's nap schedule is well established. Here's how to fine-tune wake windows and handle nap strikes.
11-Month Sleep Guide
Approaching the first birthday, your baby's sleep patterns are maturing. Here's your guide to the 2-nap sweet spot and pre-toddler challeng…
12-Month Sleep Guide
Happy first birthday! Here's what to expect for sleep as your baby transitions into toddlerhood, including the 12-month regression.
13-Month Sleep Guide
At 13 months, the 2-to-1 nap transition may be on the horizon. Here's how to know if your toddler is truly ready.
14-Month Sleep Guide
The 2-to-1 nap transition heats up at 14 months. Here's how to handle the in-between phase gracefully.
15-Month Sleep Guide
Most toddlers are in the thick of the 2-to-1 nap transition at 15 months. Here's your roadmap through this common shift.
16-Month Sleep Guide
By 16 months, most toddlers are thriving on a single-nap schedule. Here's how to optimize the routine and handle bumps.
17-Month Sleep Guide
Your 17-month-old is fully in toddler territory. Here's how to manage growing independence and maintain great sleep.
18-Month Sleep Guide
The 18-month sleep regression is real and driven by huge developmental changes. Here's what to expect and how to cope.
19-Month Sleep Guide
At 19 months your toddler's routine is steady, but bedtime negotiations may be heating up. Here's how to stay ahead.
20-Month Sleep Guide
Your 20-month-old's imagination and language are growing fast. Here's how these changes affect sleep and what to do about it.
21-Month Sleep Guide
At 21 months your toddler is increasingly verbal and willful. Here's how to manage bedtime with a strong-willed toddler.
22-Month Sleep Guide
Approaching 2 years, your toddler's sleep is mature but not without challenges. Here's what to watch for and how to stay on track.
23-Month Sleep Guide
Just shy of 2 years, your toddler's sleep routine is well refined. Here's how to handle the pre-birthday developmental push.
24-Month (2-Year) Sleep Guide
Your toddler is turning 2. Here's everything you need to know about the 2-year regression, nap preservation, and the road ahead.
Sleep Training Methods
The Ferber Method Explained
A complete guide to graduated extinction (the Ferber method) — how it works, the interval table, what to expect each night, and common mist…
Cry It Out (Extinction) Method
A straightforward guide to the full extinction method — how it works, when it's appropriate, what to expect, and important safety considera…
The Chair Method (Gradual Withdrawal)
A gentle, gradual approach to sleep training where you slowly reduce your presence over days. Best for younger babies or parents who want m…
Pick Up Put Down Method
A hands-on, responsive approach where you pick your baby up to calm them and put them down once settled. Best for 4-8 month olds.
The Fading Method
Gradually reducing your level of intervention at bedtime until your baby falls asleep independently. A very gentle, parent-led approach.
Bedtime Fading Technique
Move bedtime later to align with your baby's natural sleep pressure, then gradually shift it earlier. Works well alongside other methods.
How to Choose a Sleep Training Method
A practical guide to selecting the right sleep training approach based on your baby's age, temperament, and your comfort level with crying.
When to Start Sleep Training
Signs your baby is ready for sleep training, ideal age windows for each approach, and situations where it's better to wait.
Methods by Age
Sleep Training at 3 Months
What gentle sleep habits you can build at 3 months and why structured sleep training should wait.
Sleep Training at 4 Months
The earliest age for gentle sleep training methods. What works, what to adapt, and navigating the 4-month regression.
Sleep Training at 5 Months
A sweet spot for gentle methods with growing readiness for more structured approaches. Adapting techniques for 5-month-old development.
Sleep Training at 6 Months
The most popular age to start sleep training. All methods are available, and your baby is developmentally well-prepared.
Sleep Training at 7 Months
All methods still work well at 7 months. Addressing sitting up, solid foods, and the 3-to-2 nap transition.
Sleep Training at 8 Months
Navigating sleep training alongside the onset of separation anxiety and increased mobility at 8 months.
Sleep Training at 9 Months
Handling peak separation anxiety, pulling to stand, and the 8-10 month regression while sleep training at 9 months.
Sleep Training at 10 Months
Training at 10 months with a mobile, vocal baby. Handling cruising, babbling protests, and the tail end of separation anxiety.
Sleep Training at 11 Months
Training near the first birthday with emerging independence, standing stamina, and early signs of toddlerhood.
Sleep Training at 12 Months
Sleep training your 1-year-old. Handling emerging toddler behaviors, nap battles, and the transition to independent sleep.
Sleep Training at 13 Months
Early toddlerhood brings new sleep challenges. Navigating the start of the 2-to-1 nap transition and growing willfulness.
Sleep Training at 14 Months
Managing sleep training alongside the most common nap transition age and increasing toddler assertiveness.
Sleep Training at 15 Months
Training a mobile, verbal toddler at 15 months. Handling crib gymnastics, single-nap schedules, and boundary testing.
Sleep Training at 16 Months
Sleep training a 16-month-old with growing language, strong preferences, and solidified single-nap routines.
Sleep Training at 17 Months
Addressing emerging toddler independence and the 18-month regression preview at 17 months.
Sleep Training at 18 Months
The 18-month regression, the 2-to-1 nap transition wrap-up, and toddler-specific sleep strategies for this challenging age.
Sleep Training at 19 Months
Navigating toddler sleep training with an increasingly verbal and strong-willed 19-month-old.
Sleep Training at 20 Months
Training a 20-month-old: dealing with FOMO, crib climbing risk, and developing emotional intelligence.
Sleep Training at 21 Months
Approaching 2 years: handling sophisticated stalling, bedtime fears, and the push for autonomy.
Sleep Training at 22 Months
Final approach to 2 years: preparing for the toddler bed transition, managing "I do it myself" energy, and refining sleep habits.
Sleep Training at 23 Months
Nearly 2 years old: refining sleep independence with language-based strategies and strong routine boundaries.
Sleep Training at 24 Months (2 Years)
Sleep training your 2-year-old: toddler bed challenges, "big kid" motivation, and long-term strategies for independent sleep.
Health & Medical
Teething and Sleep
How teething affects your baby's sleep and evidence-based strategies to help them rest comfortably.
Teething Timeline: What to Expect When
A complete guide to which teeth come in when, which cause the most sleep disruption, and how to prepare.
Fever and Sleep: When to Worry
How to manage your baby's sleep during a fever, when to call the doctor, and when to pause sleep training.
Sleep During Illness
How common illnesses affect baby sleep, when to maintain routine vs. be flexible, and getting back on track after recovery.
Vaccines and Sleep
What to expect for your baby's sleep after vaccinations and how to handle temporary disruptions.
Growth Spurts and Sleep
How to recognize growth spurts, their effect on sleep, and how to handle the temporary disruption without derailing your routine.
Reflux, Colic, and Sleep
Understanding reflux and colic, how they affect sleep, and safe strategies for managing nighttime discomfort.
Sleep Environment
Ideal Room Temperature for Sleep
How to set the right temperature, dress your baby appropriately, and recognize signs of overheating or being too cold.
Why Darkness Matters for Baby Sleep
How light affects melatonin production, the case for blackout curtains, and the best night light choices.
White Noise for Better Sleep
How to use white noise safely and effectively to help your baby sleep better.
Safe Sleep Guidelines
The essential safe sleep recommendations every parent needs to know, based on the latest AAP guidelines.
Setting Up the Perfect Sleep Space
Everything you need to know about creating a safe, comfortable, and sleep-friendly environment in your baby's room.
Wonder Weeks & Mental Leaps
Wonder Weeks Leap 1: Changing Sensations
Your newborn's first developmental leap around week 5 brings heightened awareness of the world and may cause extra fussiness.
Wonder Weeks Leap 2: Patterns
Around week 8, your baby begins recognizing patterns in the world. This sleep-disruptive leap brings fussiness but also the first genuine s…
Wonder Weeks Leap 3: Smooth Transitions
Around week 12, your baby discovers smooth transitions in movement and perception, gaining better body control.
Wonder Weeks Leap 4: Events
The leap around week 19 coincides with the infamous 4-month sleep regression. Your baby begins understanding sequences of events.
Wonder Weeks Leap 5: Relationships
Around week 26, your baby discovers relationships between objects. This sleep-disruptive leap brings separation anxiety and new problem-sol…
Wonder Weeks Leap 6: Categories
Around week 37, your baby begins grouping the world into categories, recognizing that different objects can belong to the same group.
Wonder Weeks Leap 7: Sequences
Around week 46, your baby learns to understand and perform sequences of actions. This sleep-disruptive leap drives major developmental prog…
Wonder Weeks Leap 8: Programs
Around week 55, your toddler begins understanding programs: flexible goals that can be reached by different paths. This sleep-disruptive le…
Wonder Weeks Leap 9: Principles
Around week 64, your toddler begins grasping abstract principles like flexibility, patience, and negotiation.
Wonder Weeks Leap 10: Systems
Around week 75, your toddler begins understanding systems: how principles combine and interact. The final Wonder Weeks leap.
Sleep Regressions
The 4-Month Sleep Regression
The 4-month sleep regression is a permanent change in your baby's sleep architecture. Here's what's happening and why it's good news.
The 8-Month Sleep Regression
Separation anxiety, crawling, and pulling to stand collide around 8-10 months. Here's why sleep falls apart and how to get back on track.
The 12-Month Sleep Regression
Walking, first words, and a developmental explosion around 12 months can disrupt sleep. The biggest trap: dropping to one nap too early.
The 18-Month Sleep Regression
Toddler independence, teething molars, and the 2-to-1 nap transition make the 18-month regression one of the toughest. Here's how to surviv…
The 2-Year Sleep Regression
A language explosion, developing imagination, and new fears make the 2-year regression unique. Plus: navigating the big kid bed transition.
Common Sleep Problems
Early Morning Wakings
Why your baby wakes before 6 AM and practical strategies to push wake-up time later.
Short Naps: Why and How to Fix
Understanding why your baby naps for only 30-40 minutes and age-appropriate strategies to extend naps.
Split Nights (Long Night Wakings)
Why your baby wakes for 1-2 hours in the middle of the night and how to resolve it.
False Starts (Waking 30-45 Min After Bedtime)
Why your baby wakes up shortly after being put down for the night and how to prevent it.
Bedtime Battles and Resistance
Why your child resists bedtime and proven strategies for smoother bedtimes at every age.
Night Feeds: When to Keep and When to Wean
Age-appropriate night feeding expectations and gentle methods for reducing or eliminating night feeds.
Schedule Problems: Too Much or Too Little Sleep
How to identify and fix schedule issues that cause sleep problems throughout the day and night.
Overtired vs Undertired: How to Tell the Difference
Learn to read your baby's cues and distinguish between overtiredness and undertiredness.
Nap & Sleep Transitions
Dropping from 4 to 3 Naps
How to navigate the first nap transition around 3.5-5.5 months and adjust your baby's schedule smoothly.
Dropping from 3 to 2 Naps
Navigating the 3-to-2 nap transition around 6-9 months with schedule examples and troubleshooting.
Dropping from 2 to 1 Nap
The longest nap transition — how to manage the shift from two naps to one around 13-18 months.
Dropping the Last Nap
When and how preschoolers drop their final nap, and why quiet time is a worthy replacement.
Transitioning Out of the Swaddle
When and how to stop swaddling your baby safely, with step-by-step transition methods.
Crib to Toddler Bed Transition
When to switch from crib to bed, how to make it smooth, and why waiting is usually best.
Moving Baby to Their Own Room
How to transition your baby from your room to their own room, with practical tips and what the research says.
Life Events & Travel
Travel and Sleep
How to manage your baby's sleep while traveling, including time zone changes and portable sleep setups.
Daylight Saving Time and Baby Sleep
Step-by-step guides for adjusting your baby's schedule when the clocks spring forward or fall back.
New Baby and Toddler Sleep
How a new sibling affects your toddler's sleep and strategies for maintaining everyone's rest.
Daycare and Sleep
Managing different nap schedules between home and daycare, and communicating with providers.
Moving Houses and Sleep
How to maintain your child's sleep through the upheaval of moving to a new home.
Bedtime & Nap Routines
Bedtime Routines by Age
Age-appropriate bedtime routines from newborn through preschool, with timing and elements for each stage.
Nap Routines: Shorter but Just as Important
How a brief, consistent pre-nap routine helps your baby transition from awake to asleep faster.
Wind-Down Period Before Sleep
What to do in the 30-60 minutes before bedtime to help your child's body prepare for sleep.
Bath in the Bedtime Routine
Does a bath actually help babies sleep? What the research says and how to use it effectively.
Track Your Baby's Sleep
NapNap Baby helps you log sleep, predict nap times, and build healthy routines — all in one app.
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