Congrats on 3 weeks!! Great job-keep going!
The sleep thing does get better, took me over 2 months to sleep well again. Not only are our brains healing, but there's a lot of clear thinking going on-hard to turn it off at night.
I haven't figured out the social thing yet and it is an issue. A big part of me misses the social lifestyle I had with drinking. I still go down to our local bar and see friends but I'm so bored with it now. The other part wants to be a hermit and never leave the house. Searching for that happy medium where I still have some fun in my life. I think fun has involved drinking for my entire life and I have to relearn what other things might be fun.
Hang in there, you're doing great so far. You have a nice positive list going already