Feeding problems

Y’all my babies schedule is everywhere there’s day where she eats 3 oz to 4 oz she’s 3 months old and I see so many stories of babies drinking 4+ ozs every 2 hours or so is this normal? Her next docs appointment is feb 13 I feel like she just snacks I decided to write down her feeding schedule for a day to see and here it is. And another question is anyone’s baby trying to sit up already? Because mine is she hates laying down now and just want to sit. and she hates tummy time and I haven’t seen her roll on to her back or tummy on her own which worries me. 😔 I somehow feel like she’s not progressing or that I’m doing something wrong.