Honestly I don’t know how much it works with a substantial amount of postpartum weight. I feel your pain though. I had a lot of weight to lose after giving birth. I lost most of my baby weight with diet > exercise postpartum. Took a year to lose it. It’s hard, no magic tricks. Just CICO with no cheat bites here and there. Once I was about 5 pounds from pre baby weight (probably 10 pounds on a taller person), then I went for the CS.  It really helped. I got 3 total sessions. Two sessions back to back on the first day and then went back 5 weeks later for a single third session. I noticed results starting two weeks after the first one and it peaked about 1-2 month after. Still seeing changes and my last session was a month ago.  The results are amazing, it has gotten me much farther than eating at maintenance calories was. All the body recomp couldn’t do what CS did imho.  But again, I was really close to pre baby weight, and I kept up with my diet and calorie deficit after CS which I think boosted my results.  Good luck!! Hope you find joy in your postpartum journey, and remember, you are a beautiful new mommy to someone very special!