My baby boy was born 7.5 and lost about 6% when leaving the hospital. At this last check up (the day after check up) he had almost lost 10%. I was breastfeeding, and The pediatrician told me she wanted me to supplement with formula. Now we're doing mostly formula because when I pump I'm getting close to nothing. Randomly I'll start leaking through my shirt and go to pump but the most I've ever gotten is 2 oz. he's a couple days over 2 weeks now, do you guys think he's growing? He was very skinny but very tall to begin with. 7.5 lb and 21.5 in.

This picture is of us when we first got home.

This is him now. What do you guys think?