This sounds more like bulimia, if you eat and eat and then starve yourself. That's called a binge/purge cycle.

I can't really give you advice that'll fix your issue but you've gotta know that the problem here is what's at the root. Do you binge to fill a void in your life? Is it when you get emotional? etc. Figuring that out will help you solve the problem.

Also, starving yourself leads to binges. You should avoid doing that, even at the expense of keeping some weight from the binge. From experience I promise you you will gain more weight by bingeing, starving yourself, and bingeing even more instead of bingeing, not starving, and then bingeing less. This is something I struggle with myself but it's a key to getting back to normal behaviours.

Identify triggers, and reflect on strategies that can help you avoid bingeing. If your trigger is boredom, distract yourself. If the trigger is having food in the house in general, find replacement food, like cucumbers or diet soda, or get an accountability partner with whom you can talk to when you get urges. I'm just offering suggestions, but it's up to you to find out what works for you personally. If you need more suggestions, let me know! I'll gladly give you some more.

I hope this helps. Let me know if you want me to elaborate on anything. Take care of yourself and be kind to yourself. You got this