Tasha, you are doing a fantastic job! I remember needing to breathe deeply LOTS when DD started to feed because it was so painful, even without nipple issues. Sleep can help your milk production as long as your not missing many feeds. Sure helps the sanity!
A LC would be a great support right now. I'll PM you the details of a well known very experienced LC that lots of mums have used, including us. I've even cried(heaps) on the phone to her.

Eta- I had to burp DD at least 4 times per breast feed for ages. 4 times with a bottle too. She was a windy baby!