I'd just keep trying to latch like the nurse said

it takes a few days for the real milk to come in, until then, newborns stomach is the size of a marble. they only need a tiny amount to fill them up. you can tell by the diapers if they're getting enough (:

Babies have a 24 hour food reserve and even after the 24hrs their tummies are really tiny so they don't eat much. As far as not making a lot of colostrum that's fine. Only time to worry is when your milk comes in and you aren't producing enough. The amount of colostrum doesn't dictate how much milk you'll make.

if your trying to exclusively breastfeed keep pumping and trying to latch your baby. but if you aren't you can ask for formula. they always try and talk you out of it. but they give it to you.

Baby's stomach is about the size of a cherry right now. She doesn't need much more than about a tablespoon of milk at a time until a few days old. Try not to stress mama. You got this

Their stomachs are so small so if you're getting a little bit out and nursing very frequently it will be enough for baby and will help your body produce more. Now, If baby loses more than the normal amount than expected they may ask that you supplement with formula, and if you do that, make sure you're able to pump so your body still knows you need the milk to be produced since milk is a supply and demand thing.

Try the nipple shield.

My son wouldn't latch either but he was preemie and had to be in the nicu but I wasn't producing enough so I gave in and let them feed him formula and mix it with what I pumped and brought to him cause I didn't want him going without. Hopefully your supply comes in good unlike me. mine still hasn't and my son is almost 3 months.