How much do babies normally eat at 6 months?

Marilyn
We started to introduce him to solids around 4 months. My son turned 6 months last week and now are trying to get him to eat more soilds.I am not sure if I am over feeding him, I mean he keeps it down. At every feed expect late night I feed him Gerber baby food which is a 4 oz container and he still wants his bottle which is about 6 oz. Mind you my son is a larger baby, he born pretty big 8 lbs 11 oz and now about 20 lbs and 27 inches. I haven't gone to his 6 months appointment yet...I'm just curious has anyone else out there feed their baby like this?