Is anyone able to intentionally lose weight?

Every time I have a flare I put on like 15 lbs and it seems like nothing I do makes it go away except waiting, which takes about a year, and right as it seems stable I have another flare up and it goes right back up within a month. I think some of it initially is swelling/edema/fluid, but after a while I think it's just fat. Either way its really hard on my body, and also emotionally distressing, because I feel like nothing I do changes it, or sometimes even makes it worse.

Has anyone had any luck in this area?