Are you schedule feeding him or will he not eat more than that every 3 hours? That doesn’t seem like enough at all and most breastfed babies eat on demand and cluster feed as well sometimes. My daughter was eating that much her first week alive. By one month it was definitely closer to 4 oz per bottle and we always fed on demand, not at set times. Did your dr recommend anything? The only other thing I can think to recommend is to supplement with formula, but it makes more sense to just start feeding on demand with breast milk if you’re currently schedule feeding.

Ask your doctor for proper advice

Maybe consider a little bit of formula with added calories in it? I am trying to exclusively breastfeed but not producing enough right now so my little one is supplemented with similac optigrow... it’s specifically for small and premature babies... my daughter was born at 35 weeks at 4.5 pounds... she had her two week check up today and is now 5.1... I would consider supplementing a little

Your doctor didn’t tell you??

Is 2oz all he will take down. My girl is a week tomorrow she started with just a 1/2oz every 2hrs but now at a week old is getting 2.5oz at a time. ( I exclusively Pump so she is also only having breast milk) we pace feed and burp a lot. It takes an hour to feed some times.