I don’t know how to handle it

I suffered from Anorexia as a pre-teen and teenager.I learned coping skills and mostly do well as an adult.I have only had minor issue with lapses that have been handled by myself within a few days with no issues and I was able to logically talk myself back into normally eating with no problems.I always have what I call "anorexia brain" and I know I always will but I deal with it.Then my neurologist put me on my Qudexy XR to try and help with my chronic migraines and at the same time my psych increased my adderall dosage.Between the two I essentially stopped eating for a week.I lost a 10 pounds in a week.I was in heaven.I stopped the adderall due to being a zombie and it being too strong.I am eating some but the qudexy makes me not want to eat hardly anything.The logical part or my brain is telling me to stop the medication because I do not need to lose the weight and I need to be healthy and all that jazz.But the anorexic part is in heaven and is telling me to keep it going and let's see if I can get to can get to that goal weight I've been wanting for week anyway! I know I'm malnourished and dehydrated because I'm not wanting to drink much either.This medication is tough.I know I need to stop it but I can't convince that part of my brain. This morning I was down 15 pounds in about 2.5 weeks.Which I know is not a healthy about of weight loss.She told me to watch for weight loss and she didn't want to waste away to nothing because I was on the smaller side already(she does not know my history of anorexia).She just said most woman love the side effext of losing weight from it!I don't know how to win this war and normally I always win