When my 12 y.o. was born she tipped the scales at over 9 lbs. and she started out drinking 3.5 oz per every 2 hour feeding. By the time we came home from the hospital, about 5 days post because I developed strep throat and a fever and required IV antibiotics, she had decreased the time between feedings to about 1.5 hours. At 3 weeks this kid was drinking 5 oz every 2 hours non-stop. Pacifiers and bottles of water did not help. If she wasn't given formula she screamed and crammed her fist in her mouth and sucked as if they were lactating! She gained 3 pounds her first 6 weeks and boy did her Dr. rant and rave. I felt like I should strap her to a treadmill!
This kid would scream unless she was fed around the clock. My Mom also told her Dr. to back off and told me to feed that baby! I did, she got fat but slept longer during the night ( 4 hours) after we gave her minute traces of cereal at 2.5 months. Today she is skinny as a rail but eats like a horse! Lucky for me she will eat "good" stuff like raw veggies covered in ranch dressing for a snack and lots of turkey and fish even turkey burgers and bacon. She also runs a lot. I just think some kids have very high metabolism rates. Tara