Is my baby “too fat”

My baby is 2 months old. He eats a lot. Lol. I breastfeed him primarily but sometimes supplement with formula if my sister is watching him.

Every time someone meets him they’re like “what are you feeding him”. If I had a dollar for every comment I could pay for his college tuition already. I’m just wondering if these are just normal comments people make when they see full babies or am I feeding him too much? Is that such a thing with a new born? Should I not always feed him when he wants the boob?