My 3 week old is my only child and she is draining me, like literally! I bought a breast pump because she does not care to breast feed. At one week she was drinking 2 ounces a feeding every 1 to 2 hours. Now she is almost 3 weeks and she has been drinking 3 to 4 ounces at a time every 2 hours. Last night was horrible. She woke me up so frequently to feed and I had to feed her every hour because I am only pumping 2 ounces an hour. Shes so hungry - this morning I fixed a bottle of formula because I felt so exhausted and so drained I couldn't pump so I fixed her a bottle and she drank 6 ounces! It just gets worse and worse and the pediatrician said that she should only be drinking 2 ounces a feeding. Any advice or input would be much appreciated, thanks!