Wanting to bf again

So, in the hospital, my baby wouldn’t latch right. It was sooo painful. & every time that I’ve tried since has been painful. I feel like her latch has gotten a little better and it’s not AS painful. I’ve been pumping and feeding, well, I want to breastfeed again. The only problem is, I can only get one ounce from each boob, which she eats 4 oz a feeding, so, my question is, do I supplement with a bottle when she’s done if she’s still hungry or do I just let her keep trying to get milk? (I doubt she will, she gets fussy quick) I want to build my supply back up.