Birth control....

Is any other mommies on the mini pill? If so has your milk supply dropped a lot? I thought it was just my little guy wanting more food but he eats the same amount he always has. I had to start supplementing with formula because my supplu has dropped a lot. I'm just curious to see who else's has dropped! I feel so bad that I cant provide for every feeding anymore😕 he gets a bottle twice a day sometimes 3 and i pump in between those bottles and get anywhere from 2-4 ounces both boobs. I need birth control but I also want to feed my little guy.