Super low milk supply?

I recently got my period back. I’m 6 weeks postpartum and I’m literally only pumping drops!!!! I already pumped less maybe 1-2oz but now I’m only making a few drops. Is this normal? What can I do to up my supply again? I don’t nurse because baby has latch issues. I pump and formula feed. I want to start pumping enough where I don’t have to supplement anymore