How many ozs?

My son is breast fed and bottle fed with expressed breast milk. He was born via c section, breech, at 37 weeks and was wrapped in his cord 3 times. He was 5lbs 15oz, but had very low body fat and would have sugar drops because he burned through his calories fighting to maintain his temperatures. From the get go, we've had to supplement with formula in order to get his energy up from low sugar for him to nurse from the breast. Now, my lazy, beautiful, healthy boy only wants to nurse for a few minutes. Then he wants his bobo which is a much faster and easier dining experience. My question is how many ozs are your lo's taking? He breast feeds for a few minutes and is now eating 2.5 ozs regularly from the bottle, sometimes making it to 90mls. I was told by a "helpful" Karen type that he should be at 4 ozs by now. He's gaining weight wonderfully, so I'm not worried I'm underfeeding him, I just want to gauge where his peers are. Thanks! ❤