Welcome - For me, I can't drink "just on Fridays" as quickly I will go back to what I was doing before and a soon after ... much worse.
I find that worrying about "never drinking again" is not helpful to me, but focusing on "I just won't drink today" is more manageable.
Alcoholism is progressive and once we pass that point, it is hard to return back. Keep reading and posting. You will see a lot of others like you and a lot of support.