6mo baby boy feeding schedule ?

I’m exclusively breastfeeding my 6mo boy but I think he’s hungry..so I’ve been mixing frozen bm with oatmeal 2oz after breastfeeding IF he seems unsatisfied w/boob maybe once-twice/day. I don’t want to stretch his stomach, so not sure if I’m feeding him right.

He bf every 3hrs from 3am-9pm so about 8xday. Today I tried s as mango 3.5oz pouch he sort of ate it -first time trying other food.

Wondering what you mamas are feeding you 6mo. Ty🙏