There are many signals that a baby might give to let you know that they're full. It's important to watch for these signs, as there's typically no reason to try and overfeed an infant. Children under the age of six months will let you know they're full by closing their mouth, relaxing their hands, and turning their head away from the bottle or breast. Between 6-24 months of age, babies may begin using hand signals to let you know they're full. They might make sounds of dissent or push the food away. It's best to allow your child to determine when they are finished, so that eating remains a pleasurable experience.