Babies over 20 days old can eat 80-100mL in one meal, some children are heavier and may eat more. The stomach capacity of a newborn baby is 10-20mL/kg, and the amount of milk per day is 150mL-180mL/kg. every child is different, some babies eat more, some babies eat less, the key is to see if the weight is able to grow normally, the weight should be increased by at least 0.6kg/month in the first 6 months, and preferably 0.7kg/month, and 0.6kg/month in the last 6 months. When the baby is full, he will spit out the nipple and turn his head to the side to show that he doesn’t want it. At this point, don’t force him to feed, and overfeeding or overfeeding may lead to indigestion, which will be manifested as vomiting or diarrhea.