By four weeks feeds get a little bigger and one night stretch may reach 4 to 5 hours.
The time a baby can comfortably stay awake between sleeps before getting overtired.
About 0.75 to 1.25 hours awake between sleeps.
4 to 5 naps a day fits these windows.
Every baby is different. These are typical ranges for healthy, full-term babies, not targets. The easiest way to know your baby's normal is to track a couple of weeks and look at the pattern.
Thungu is a baby-tracking bot, not medical advice. If you're worried about feeding, weight, sleep, or development, talk to your pediatrician.