The more air bubbles in the bottle, the more you eat. This is normal because there is a vacuum in the bottle, but in the process of drinking milk, the child needs to change air and will blow air into the bottle, making bubbles appear in the bottle. As long as the child doesn’t eat the air when feeding, this generally doesn’t affect much. You should burp your child after each feeding to avoid hiccups and vomiting after eating air. It is best to give your child fewer meals to avoid indigestion. Pay attention to the fact that it is best not to make the milk powder too thick every time you feed your child, as this can easily cause the child to become inflamed, and to drink more water to prevent constipation.