My ds was 5.11 1/2 at birth, he was 5.9 when I took him home 3 days later. His weight at 2 weeks was 6.7 at 1 month he was 8.5, at 2 months he was 8.12, and at 3 months he was 11.7, and today I estimated weighed him at 11.12.8. My question is his ped. told me to supplement formula at 2 months cuz she said he was under weight. I'm worried when I take him in on the 15th of this month that she's going to say he's underweight again. I want to ebf him from now on, but still use formula. I just started using the sns yesterday and he seems to be okay with it except he prefers to nurse on the right instead of the left. I'm just wondering what everyones opinion on my son's weight gain is and if the ped is going to make a remark that hes not gaining enough again.