Upping the oz question

So my 7 week old has been taking 4 oz pretty good. So last night (only at the latest night feeding at 12, she took 5oz and slept from 12:30-5:30). Throughout the day today she took about 3-4oz each feed. Then at the recent feeding I tried to give her 5 oz and she drank it all but then spit up. It seemed like a lot 😬.

I don’t know how many oz to give her! I’m so confused. Can anyone help me ?