I found that my anxiety began to lift markedly after 5 or so days. Even social anxiety, ironically, since that was one use for alcohol in the beginning.
I was feeling antsy earlier, so got some laundry folded and put away, exercised a bit with some new resistance bands I picked up, and got caught up on bills. The fewer items that are hanging over my head the better. And the exercise helped release some of that nervous energy.