If I were you I'd take him to a different doctor to have the circumcision proceedure checked out. Just in case something went wrong with the op. Hope all goes well.
Hi,
If he is obese, it is most likely due to that and he will be alright when his puberty sets in. Nevertheless, it is better to get a doctor's confirmation during the next visit to his doctor and most likely, the doctor would advise you to wait till puberty.
Solace