It is normal for newborn babies to drink 600ml to 800ml of milk a day, but it varies from person to person. Each child is different from the other, so the daily milk requirement will be different. Generally, 600 ml to 800 ml of milk per day, 6 to 8 feeds per day, on-demand feeding is sufficient. Parents can observe whether the amount of milk is sufficient by observing the baby’s stool, growth and development, and sleep. Normal condition is mushy stools, about 4 to 5 times a day. If the number of stools is low, you need to consider insufficient milk supply. As well as observing the baby’s monthly growth and development, if the growth and development is up to the normal standard and there is no obvious decline, then consider the amount of milk is sufficient. You can consult the pediatrician at the hospital for feeding problems during pregnancy.