Trying to loose weight and EBF

Any tips on loosing weight and EBF. I'm up to 165 and would like to be in the 130s so I have a lot of work to do. I'm exhausted most of the time, so it's really hard to workout. I would like to take a supplement for energy but nothing seems safe. I'm also supposed to be eating good fats to get my baby's weight up. It's so hard. Whoever said weight will melt off by just by breastfeeding is an a-hole. I'm still 15 lbs bigger than when I got pregnant and I needed to loose 20 when I conceived. Getting old sucks. Lol.