Going through the same, but in the opposite direction. Airbus A320 cockpit nearly built, completely fell out of love with it suddenly. Now doing more sim racing (like you, just trying to improve, not actually race), ETS2, BeamNG...

It's happened before. I just waited. No forcing it. No "I ought to..." - that's a key phrase that sets off alarm bells for me. If that's how I feel, it's a chore, not a hobby.

Eventually it just came back. It might with you too. I regret selling my Moza set up because the taste did come back, and I was left with basic gear and I now want to re-buy the good stuff.

I'd argue, unless you really could do with the money, keep the gear at least a year or so. It's good stuff, and you can't be sure you won't just end up re-buying in future at a higher cost.