Formula and breast fed baby

I currently formula and breast feed. Mostly formula but I would like to stop and just continue with breast feeding. My daughter does not do well with the formula she’s so much better with my milk.

My issue is I know I don’t produce that much milk and im willing to try pumping more often and letting her feed more

And try to slowly wean away from formula But I’m already going to be 3 weeks post partum so not sure if I can even produce more milk at this point or if I’m stuck at my 1 oz per session...

Any suggestions or help would be great.