I wouldn't pump and nurse as much as possible. Comfort nursing too. Just have your baby at your breast at all times if possible. Alot of people have seen an increase using fenugreek, don't know if you've tried that- but im sure you've heard of it.
And just relax, if you do end up having to supplement it's not the end of world. I think some people put too much pressure on this need to have ebf babies, some mamas just can't do it for whatever reasons.
Sorry, I hope everything works out.