Even if the end goal is moderation and not abstaining entirely, it is generally in your best interest to dry up for a good long while. A big part of either solution is figuring out what sets you off and dealing with it sans-alcohol. Rehab is certainly the easier choice, but it's not the only way to do it successfully.
Don't go from 750 to 0. The first time I dried up I was drinking 14-18 vodka seltzers a night, I ended up in the hospital. My "a-ha" version had me dropping a drink or 2 per week until I was down to 2, then I dropped it entirely.
Understand that not everyone can achieve moderation. It is entirely possible you will approach it that way and waste time realizing you're an all or nothing guy. It sucks, but generally by the time you figure that out, you'll have a clearer picture of what needs to be done.
It's important to find things to get your release elsewhere, every time you opt to drink instead, your progress is set back that much more. I have ADHD which causes dopamine problems, removing alcohol from the equation meant I had a serious deficiency. I went from working out an hour 3/4 times a week to 1.5hrs 5/6 times for instance. Not that it's the case with you, but every consideration counts.
I am fortunately at a point now after a few years where I can have a drink or 2 with the guys and I'm good. I generally opt not to though because it stops me from doing the other stuff I've come to enjoy.
Don't discount therapy. It is an insanely beneficial tool to help you work out your goals, guide you, and help understand and address underlying issues. I don't like group stuff and I am anything but a fan of religion so AA was never a consideration. There is an alternative called SMART recovery that skips the religious stuff.
Good luck. If there's anything I can do, or if you'd like to pick my brain please feel free to reach out!
