I was a little disappointed at my girls check up last week. She only weighted 12.2 pound. My boss and his wife had their baby the same day and their son eats 6 to 8 oz of formula and weights in over 17 pounds. I give her 4 oz, which everyones says 4 oz isnt enough for her and she should be eating more. I looked on the internet for an answer, but they all said 6 oz or more. One said half the babies body weight, which seems like a lot to feed a baby. How many oz did you give you LO at this age?