As long as she's gaining weight then I think what she's eating is fine. But if she's not then you'll have to either change the amount you feed her or the time you feed her. Good luck mama.
If that's the amount she drinks without throwing up I think your fine. Maybe call her doctor and see what her pedi says other than that you could try feeding her 1oz every 2-3 hours and see how she does. @lovemylittlefamily