If it's any consolation I'm in the same boat after 17 days. I've been doing yoga, meditating, going jogging, eating really well, lost 8lbs, in great shape already... the works. What am I supposed to do after 20 something years of booze being the most fun in my life?
Today it all just feels pointless because my life is completely empty even when I'm sober. I try to keep somewhat busy but there are awful times like right now where I just don't know what to do with myself. So yeah, I feel your pain.
At least you have your partner, I'm doing this on the back of a breakup during covid lockdown, so it could be worse bro.