General guidance, not medical advice. Every baby is different. These guides describe typical ranges and common approaches — they are not a substitute for your pediatrician.
Start here: sleep by age
How much sleep does a baby need?
Age-by-age chart of total sleep, night sleep, nap counts and wake windows, newborn to toddler.
Wake windows by age
How long a baby can comfortably stay awake between sleeps — and why the last one of the day is the longest.
Sample sleep schedules by age
Realistic day plans for 3, 4, 6, 9, 12 and 18 months, built from wake windows rather than fixed clock times.
Nap transitions
When babies drop from 4 to 3, 3 to 2, 2 to 1 and finally to no naps — and how to survive each one.
When sleep falls apart
The 4 month sleep regression
Why it happens, how long it lasts, and why it is a permanent change rather than a phase.
Sleep training methods
Chair, Ferber and Cry-It-Out explained step by step, with the Ferber interval table.
Wonder Weeks chart
Every mental leap, the fussy signs that come first, and the skills that follow.
White noise for babies
Whether it helps, how loud is too loud, and how far the machine should sit from the crib.
Teething
When do babies start teething?
The full eruption chart from first incisor to second molars, and how wide normal variation really is.
Teething symptoms
What teething genuinely causes, what gets wrongly blamed on it, safe relief, and the products to avoid.
Teething and sleep
How to tell a few teething nights apart from a regression, a nap transition, or a schedule that stopped fitting.
Feeding, growth and development
How much milk does a baby need?
Amounts per feed and per day by age, for both formula and breastfeeding, plus the signs that matter more than the numbers.
Baby growth percentiles explained
What a percentile actually means, how WHO charts are calculated, and when a change is worth asking about.
Baby milestones by age
What most babies are doing at 2, 4, 6, 9, 12, 18 and 24 months — and when to raise a concern.
Baby activities by age
Simple, safe play ideas for every stage of the first year.
Safety and tools
Safe sleep guidelines
The current AAP recommendations for reducing the risk of SIDS and sleep-related death.
Choosing a baby sleep tracker
What actually matters in a tracking app — offline support, two-parent sync, real predictions, and getting your data out.
Guides tell you the average. Your baby is not the average. NapNap learns your baby’s real wake windows as you log and tells you when the next nap and bedtime are actually due.
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