So my son as born at 37+2. He is ebf until recently when I started pumping after I nursed him and "topped him off" a few times a day with pumped breast milk from a bottle. Now the issue is he isn't gaining weight. He was 8lbs 6oz at birth. He lost 11% of his weight and at 3 weeks still only weighs 8 lbs. Then he lost an oz..... the dr wants me to supplement with formula.....I'm hesitant because adding formula is a slippery slope. (Not thst there is anything wrong with formula, it's just not for me because I'm fairly lazy) Has this happened to anyone else's baby and they needed up fine, or were just a slow gainer?