How much is your 3 month old eating?

We switched from EBF to formula at exactly 2 1/2 months.. now shes exactly 3 months and shes eating every two hours on the dot 2oz , if she eats anymore she will spit it up. She sleeps 8 hours at night from 8-5am and when she wakes up from then shell eat about 3 oz. i guess its normal? Shes gaining plentiful weight but is it pretty fussy sometimes so i feel like shes not full..