Singing is good, and all your other things as well. Wow, you're working it.
Fear is normal. Our AV (addictive voice ) likes to keep us scared because that in turn keeps us drinking. That fear and anxiety will diminish with some sober time and work on your recovery. You have all the right stuff planned, now is the more tricky bit, actually doing it. Your AV will kick up and try to talk you out of doing all of these things. Don't expect that fear to go, but know (because we've done it ahead of you, and we're not lying) that you CAN lean into the fear.
No hero didn't feel fear. Not feeling fear isn't the point. It's leaning into the fear and doing it anyway that makes the difference.
Here's a great audio for you to listen to you if you fancy a chuckle and a distraction, and a big dose of wisdom...
https://www.recoveryaudio.org/aa-spe...mm-nevada-2006