During the baby’s first month of growth spurt, there will be a big increase in milk supply, an increase in the number of night wakings, and irritability and hyperactivity. 1. Increase in milk supply: There will be 2 growth spurts in the first month of your child’s life. The first one is 7~10 days and the second one is 3~6 weeks. As babies need more nutrients to develop, there will often be more breastfeeding at this time and babies will have the performance of constantly wanting to drink milk. 2. Increase in the number of night wakings: when sleeping for a longer period of time, the baby’s intestines and stomach will be emptied very quickly, and he or she will need to be fed three to four times during the night for a few days, and then the baby will return to normal. 3. Irritability and hyperactivity: As the baby is in the stage of rapid growth, if he is not fed on time, the baby will be very anxious, irritable and hyperactive, and even choked when he is anxious to eat milk.