Can u over feed a baby ?

So my baby is 8 months old

He dose drink formula and he eats baby foods !

He dose well with meals I believe so .

But when we take him to my mother in law she thinks I don’t feed him enough once she sees him she gives him baby food either a vegetable or a chicken baby food then after he finishes she wants to give him a sweet baby food or a banana even if he turns his head away and says no she makes him eat the food .

I also noticed when she baby sits him I can send him with a full can of formula and when I pick him up after 4/5 hours later more than half the xan is gone or if I send him with half a can and when I pick him up it’s empty .

Should I tell her she’s over feeding him or no ?

I mean I love to see my son eating and know he’s getting the nutrient he needs but is there a such thing as over feeding at this age please moms help