My baby is 11 month and 13 days old and at the time of birth he was 2.4 kg and from last few months he is not crossing 6.5 kg now again he is 6.3 kg his height is also not growing much he is very active. But physically he is not growing. I am giving him iron vitamin d and visyneral syrup now doctor prescribed me yo start mct oil syrup. What to do doesn't understand.