My 10 month old is petite - she weighs in about 15.5 pounds but she has a petite frame. She is also VERY active - already cruising and trying to walk. The ped makes me come once a month to get weighed - usually she gains a pound every other month. The doc made us get testing for everything and nothing came up. I am bf and the doc said my dd should be eating 12 tbps of cereal every day plus 5-6 jars of baby food and bf 5 times a day. DD never gets that much down - she fights and puts up her hands. I find myself bf her 7-8 times a day to make sure she gains. The Ped is really making me doubt myself - now she wants me to supplement with formula after every feeding. DD won't have anything to do with it and I don't blame her - it tastes horrible! Anyone going through the same thing - I feel like I'm starving my DD!