The vast majority of mothers will encounter this situation, the baby suddenly will not eat milk, how can we do? The more anxious you are, the more resistant your baby will be. Why baby does not like to eat milk 3 months old baby suddenly do not like to eat milk, eat very little. First of all, problems such as fever, diarrhea, vomiting or bad spirits should be ruled out. If there is no illness, the possible reason is too much milk. Infants less than 3 months old cannot fully absorb the protein in formula milk. Even when too much milk is consumed, it does not cause more protein absorption and increase the burden on the liver and kidneys. By the age of 3 months, the ability to absorb protein from milk increases, thus increasing the workload of the liver and kidneys, which can cause “fatigue” over time. The appetite is reduced and the baby does not like to eat milk. For this type of baby, breastfeeding can be done when the baby seems to be sleeping. When the baby eats less milk temporarily, there is usually no problem. After 10 days and a half months, when the liver and kidneys have rested and recovered their functions, the baby will like to eat milk again. Timely addition of complementary foods For babies born at full term, complementary foods will be added at 6 months, and for premature babies, complementary foods will be added at 6 months. Because parents do not understand this situation, complementary foods are added too early, for example, a normal child born at 32 weeks, according to the birth age of 5 months began to add complementary foods, because of the premature birth of 2 months, the correction age is only 3 months, so add too early, the child can not tolerate the added complementary foods, causing diarrhea, which affects the health and normal development of the child.