I had an eating disorder after going through something like yourself. Bad dieting advice from fighters who didn't know better. Basically, starvation calories, low carb, low fat, abstain from sources. Stupid shit basically, I can't believe I bought into it at the time. eg. don't eat carbs cause you won't make weight, or fats are bad for you cause they make you gas out. sugar is teh devil
It didn't help that a hack of a "nutritionist" came and gave bs advice as well.
What helped me get over, was learning how to count calories, macros properly, and flexible dieting. Its okay to eat how you want, just fit them in with your macro needs. Abstaining will do nothing but cause you to binge, and binge as bad. I'm guessing you binge 8-10k regularly.
For now, bro dieting isn't for you if you're binging after your fight/event, its harmful and detrimental. Some folks will say you're "weak" for giving in, but its not, it will happen to everyone. And in your case, when it happens it throws all progress out the window, and you end up worst than when you started.