Why does the 8-month sleep regression happen?
⚡ Short answer: Sleep disruption around 8 months is typically related to two things: a motor development leap and the first wave of separation anxiety.
Anonymous
8 aylık bebek annesi · Sleep
My baby was sleeping well at 8 months but now nights are terrible—why does regression happen at this age?
Maiyko AI ADVISOR
The real reply from the in-app AI advisor
Sleep disruption around 8 months is typically related to two things: a motor development leap and the first wave of separation anxiety.
During this period, babies gain skills like crawling and pulling themselves up to stand—their brains continue processing these new abilities at night, making sleep lighter and more fragmented. At the same time, 8-10 months is when separation anxiety (stranger anxiety) intensifies; when your baby wakes, they notice you're not there and call for you.
This is a regression but not permanent—within 2-4 weeks it settles on its own. The most effective thing you can do during this time is respond to nighttime waking quickly and calmly, but don't start new sleep habits (feeding, rocking, taking them for a walk) during these responses.
If the nighttime crying is accompanied by fever, ear pulling, or extreme restlessness, I'd recommend having your baby evaluated by a pediatrician for ear infection.
⚕️ Health note: This answer is for general information only; it is not medical advice. Every baby is different — for decisions about your baby's health, consult your pediatrician.
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