My 4-week-old daughter wants to feed every half an hour when she's awake. The doctor suggested that my breast milk may not be enough, but she uses 12-14 diapers a day with stools around 3-4 times. She gets milk every time she cries for it, so I am starting to question if milk sufficiency is really the issue. She seems satisfied after 20-30 minutes of nursing but then asks to be fed again within half an hour. Additionally, she barely sleeps because her diaper needs changing frequently due to the frequent intake. I am exclusively breastfeeding. Is this normal for a month old baby?