Alcohol and “yo-yo-ing” in regards to weight gain

I’m really starting to worry about my alcohol consumption AGAIN. I gone through these strange phases my entire life. It’s like a switch in my brain. I’ll be drinking 15 beers a day for months . Then, all of a sudden, there’s like this switch in my brain and it’s super easy to just stop drinking. Has this happened to anyone else? I’ve always “yo-yo’ed” my entire life with my weight. ALL FROM ALCOHOL. But when that switch in my brain turns off; it’s the easiest thing ever to stop drinking. But when the switch DOESN’T go off, stopping drinking is literally the hardest thing for me. I don’t know what to call it. It’s not triggered by stresses or anything like that. When I WISH AND HOPE for it to turn on, it doesn’t. It happens randomly. I’m just curious if anyone else has experienced this???? Thank you in advance!