The base line of any method FF though, is you have to WANT to stop.
Whether it's AVRT, Smart, AA you have to really see before you even start, that drinking holds nothing for you, that it's not worth it.
Of course, your body/brain will still urge you to drink, the different methods help the part of you that doesn't want to drink to stop acting on it.
I imagine my youngest son is older than you and he is in deep deep trouble with the drink. But there is no helping him, because he doesn't see he is and doesn't want to stop, he still thinks whatever he gets from drinking is worth it.
I can see him dying from this, like I've seen other people die from it. Every single one of them died still asking people to bring drink to the hospital for them, the excuse in the end? I'm dying anyway.
There will always be an excuse to drink, right until it kills you.