how to know that child has enough milk during breastfeeding   

Newborn babies often feed around 8-12 times a day. If the infant is feeding at least 6 times in a day and stays healthy, understand that your baby is having enough breast milk. The baby will naturally stop sucking your breasts; consider this an indication that the child is full for a single feed. If the child is taking 8-12 feeds in a day and yet there is no weight gain (within 15 days) or your breasts feel harder even after the baby feeds, it is a sign that the child not feeding enough.