A.R.
Hi M., This same exact thing happened to my best friend. She was also breastfeeding. Her doc put her son on a high calorie diet and he too was not having it. Finally the doc told her she needed to stop breastfeeding. She did and he started having more of an appetite. He then gained more pounds. Her son was extrememly underweight though, All children vary on their weight. I mean my nephew is only 4 mos and he weighs 17 pounds. I think it more has to do with how much he weighed at birth. See my friends baby weighed over 8 pds, and then was not thriving at the level he should of been. Do you breastfeed him before he eats? That could be throwing off his appetite. Try feeding him the food first then breast feed. That is the best advice I can give. Just know that this is normal.