Nine-month-old babies drink about 200 milliliters at a time, and the amount of milk is maintained at about 800 milliliters a day, and there are differences in the individuality of each baby, which will also be affected by the addition of complementary foods. Different weight and different development of the baby to judge according to the actual situation: underweight or developmental delay of the baby, the amount of milk may be a little less, but as long as the daily maintenance of about 800 ml, in the case of normal urine and feces, the amount of breastfeeding is within the normal range. If you rely on exclusive breastfeeding, the baby’s 24-hour urine frequency is more than 6 times, is also a sign of sufficient milk. As the baby grows up, you can gradually replace the amount of milk with complementary foods, the baby at this age has a certain chewing ability, you can add some complementary foods every day as appropriate. For example, millet porridge, rotten noodles, etc., these can not only add some of the body’s nutritional needs, to promote the growth and development of the baby to play a certain role in assisting.