Babies know that they are full, and when they feel full after eating milk, the speed of eating milk will decrease and the strength of eating milk will also be reduced, and they will show that they are playing while eating milk or looking left and right while eating milk. However, because the neurological development of the baby’s brain is not very mature, the baby’s response to hunger and satiety is not particularly sensitive, so parents must pay attention when feeding the baby, especially when feeding formula milk, and not to give the baby too much to prevent indigestion, because indigestion can cause bloating and milk flaps in the stool. As you can see above, babies know when they are hungry or full.