My 4 month baby cries a lot in the night. And when we take him out, he calms down and sleeps

A. Hello! At this age, sleep regression is a major developmental milestones where sleep cycles change for the baby. It can be sometimes due to over stimulation or over tiredness as well. The movement or change in the temperature air can so the baby naturally to calm. Check for colic symptoms and use Babyhug tummy roll on for your baby.