It is also normal for preterm babies to weigh more than nine pounds in two months. The first three months of a newborn’s life is a stage of rapid weight gain, and basically can grow 2 to 3 pounds per month. However, due to the different gestational weeks of each newborn, different nutritional conditions, different birth weight. Therefore, how many pounds a newborn can grow in two months varies from person to person. Under normal circumstances, newborns reach a daily growth rate of 10-30g, mostly normal. For preterm babies, it is recommended to go to the hospital regularly to follow up the development of height and weight. For those with normal height and weight development, no special intervention is needed. However, for those with slow weight gain, it is recommended to follow the doctor’s instructions to regulate accordingly.