Like others have said, I'm sure there are some that can stop, then return to moderate drinking, but I along with I suggest, most alcoholics just can't.
I've tried so many times after being sober, couple of weeks, couple of months, couple of years, the result is always the same, one drink and it's back off to the races.
I think an alcoholics brain is wired differently to normal folk, we're never 'cured' it's just in remission, and all it takes is that one drink to bring it all flooding back.
Good Luck to anyone that can do it, but for me at least, Einstein nailed it.
The definition of insanity is doing the same thing over and over again, but expecting different results