DS1 was a big boy and exclusively fed breastmilk for the first 6 months. I often got the comments about him being a 'big boy'. The statement that you can't overfeed a breastfed bub was what i heard from my MCHN so i was never concerned.

DS2 and DD have had nothing different to my DS1 had but they are much more petite.

A friend of mine has a little boy who she too has breastfed and it sounds as though he is just like your son. He is one gorgeous little man too

Another friend FF her son and he was huge. I think there were sleeping and feeding issues and i think as a result a lot of weight was gained. I am not judging her or her bub in anyway but i was shocked when seeing the size of her gorgeous little man at his first birthday. He is now 3 and is one solid little man

Just thinking out loud here but with my first friend and her little man i didn't think anything of the size but then with the second friend i do. I think it is from being told that you can't over feed a breastfed baby but with formula it can be quite different

Just from a different perspective DD was 8.1kg at 12 months and the weight gain between appts was not huge. Up until then she was feeding 2-3 times a night and was on 3 meals day. While she isn't a big girl by any means i still feel she looks healthy and well and i am not concerned at all.

If you trust your little man is happy, healthy and doing everything expected in his growing process i would rest assured things are pretty good