Here’s what tends to be typical around this age — wake windows between sleeps, the usual number of naps, and total sleep across 24 hours. These are population averages; your baby’s own pattern is what matters most.
Around now sleep cycles mature and many babies wake more between them — often called the “4-month regression.” It’s a developmental step, not a setback, and it usually settles with gentle consistency.
Wake windows slowly stretch and some naps begin to consolidate. A loose, predictable order to the day often starts to appear, even if the exact timings still move around.
Usually not. These are averages, and healthy babies vary a lot from week to week and from one another. A baby who feeds, grows and is generally content is often simply on their own curve. Persistent worries are always worth a chat with your pediatrician.
It changes with age and differs between babies. The figure above shows a typical range for this month, day and night combined — treat it as a guide, not a target.
These ranges are population averages, and the variation between healthy babies is wide and completely normal. A monthly guide can calibrate expectations, but it can’t resolve sleep — and no number here should make you anxious. Watch your baby, not only the clock.
This page shows age averages. The app estimates the next window from your baby’s own data — privately, on your device.
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