Weight loss

I have had a binge eating disorder for most of my life. Last year I dropped 20 lbs in 5 months and then put on 50 lbs in another 5. both ways were very unhealthy. I visited an eating disorder clinic and it didn’t help me pretty much at all. I’m in to see an new therapist Monday but I’m not hopeful bc this will be my third. The only way I lose weight is when I’m sick, even if I eat the same about of calories when I’m healthy. Recently I’ve had such bad anxiety over school that I feel too nauseous to eat a lot. I don’t want to count calories and go back to bad habits but it’s not a lot. I can only eat half of school lunch and a small dinner. I’ve started to lose weight, (good bc I’m 215lbs) but I’m dizzy and can’t focus. I don’t know if this has to do with not eating or the stress of school. There is only a month left of school and then I will go to work for 6 hrs 5 days a week. I am just worried that i will breakdown and there’s nothing I can do. Eating makes me gag and the anxiety meds I have are for specifically panic attacks and make me super sleepy. School has been one continuous panic attack so the meds don’t help. Any suggestions?? Or anything similar happen to you?