In fact, breast milk changes with time. The newborn baby eats little and sucks little, so the mother's milk will be less, but as the baby grows up, the demand for milk will also increase, so that the baby will suck the mother's nipple hard, which will stimulate the mother to produce more milk, so the mother's milk changes with the baby's demand for milk, and the demand of different babies is different, so the normal milk quantity of each mother is also very different.
And the milk yield of different parturients is different. Some women may be born with a large amount of milk, and the baby can't finish it. Some mothers can only produce a small amount of milk, and the baby is not enough to eat. The situation of different pregnant women is different, and the milk secretion is also different.
In short, the amount of postpartum milk is hardly normal. Some women even secrete milk, some are many, and some are few. Different baby's food intake will also lead to different mother's milk, so it is impossible to determine the normal milk quantity.