Girls, I need to lose some of this weight. I'm still about 15-20 lbs over my pre-pregnancy weight. I'm about 40 over my FIRST pre-pregnancy weight but I'm not even going to go there right now. I have to go back to work in two weeks (not going to get started on that either) and I can't afford to buy all new clothes

What do I do? I'm bf'ing and I'm scared of losing my supply.
Any advice?