There are many new mothers who are very unfamiliar with taking care of newborns. They don’t know where to start and a series of judgments, especially feeding issues. For example: How should mothers tell whether their 4-month-old baby is getting enough milk? Question: I have a baby who has just turned 4 months old. When I breastfeed my baby, I find that sometimes she sucks for a long time, about 30 minutes, and sometimes she only…