參考:(好有用嘅reference site)
http://kellymom.com/bf/normal/newborn-nursing/
You CAN’T nurse too often—you CAN nurse too little.
Some newborns are excessively sleepy—wake baby to nurse if 2 hours (during the day) or 4 hours (at night) have passed without nursing. Once baby has established a good weight gain pattern, you can stop waking baby and nurse on baby’s cues alone.