Hey that's great! There was a time not long ago I couldn't make it past a day sober. 5 days seemed like some sort of far out fantasy!
I had many of the same concerns. What I came to realize is that the cure is the cause. Alcohol causes the very anxiety it claims to relieve.
It's a real scam.
Be easy with yourself, especially the first week and month. The anxiety is produced from withdrawal and that can last for at least a few weeks. Try to be curious more than worried. I was worried what a horrible person I might end up being without alcohol. Turns out I was way better than I could imagine.