My son is bout to be 3 weeks n this past week he, been getting more hungry the 2-3 oz, hasn't been filling up his hunger we don't see pedia til 24Th but he getting treated for baby thrush due to the antibiotics they gave him during his nicu time at birth but the Dr there, asked how he eating and told us, 4oz OK bit I'm very is, it OK? I'm bit overthinker with him he very healthy. No fever. Not fussy it was early stages thankfully anyways he now 9lbs but tall for his, age but to me he looks petite and tall but my question is if he still hungry after his 2-3 oz do you try 4oz,next feeding. my daughters didn't get hungry as him til they were like 4-5 months, old