Is this too much?

Julie

I was planning to breastfeed but my little one ended up in the NICU. They are very numbers oriented and it was easier to pump and feed via bottle to get the numbers they wanted for discharge. Its now been 4 weeks and I'm pumping about 1200 ml a day she is only eating about 600ml. Am I going into oversupply territory? Should I slow my pumping down or will it level out?