Use them as ranges
Think in ranges rather than exact minutes. Your baby’s cues, the previous nap and their age all matter.
Why they help
If your baby is awake for too little or too much time between sleeps, naps and bedtime can become harder.
What to watch
Look for easier settling, calmer bedtimes and more predictable naps rather than perfect clockwork.
Important: every baby's sleep is different. Avoid one-size-fits-all promises, and always put feeding, growth and safer sleep first.
Safer sleep reminder. For babies, use a firm, flat sleep surface and follow the latest safer sleep advice from the NHS and The Lullaby Trust.
What's affecting your baby's sleep?
The Petit Nuage Sleep quiz considers your baby's age, naps, night waking and how they settle, helping you work out what to focus on first.
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Frequently asked questions
Do wake windows need to be exact?
No. They are guides, not strict schedules.
Should the last wake window be the longest?
Often, yes, but not always. Age and nap quality matter.
What if my baby shows no tired signs?
Use age and routine as a starting point, then adjust according to how sleep goes.
Reference sources: NHS baby sleep guidance · The Lullaby Trust safer sleep information. Last updated: 28 October 2026.