Sounds like burnout.
Don’t have any advice cause Im not doing so great myself, but maybe set some small goals for yourself that look more achieaveable and enjoyable. Set a few hours to rest and do whatever without needing to feel productive, set some days to go out and do something different, some museum you never visited, or if there is some kind of event in your city like live music or whatever. Some times it will not be your thing, other times you may discover something new you like, at any case it gives you things to talk about and discuss with your SO and peers.
Thank dude, means a lot. Here’s to hoping everything works out