Well, my understanding of the back story is this:
MrSilverLust was (and probably still is) a big fan of Slay the Spire. After he released chapter 6, he was feeling like he needed a break from NIF. So he decided to try making a card battle style game as small side project for fun, and also experiment with the new AI tools to learn more about them. After he got the minimum version done and released it (for free) he went back and did another two releases of NIF, chapter 7 part 1 and 2, and then a released a minor update for DIL in Sept'24. After that we have not really heard anything more about either game.
So It's not as though this small side project is the specific reason that NIF has not had a release for ~10 months. Nor is MrSL currently publicly working on Decked In Love now - he seems to have just gone to ground completely.
I honestly hope MrSL is not having troubles in the "real world", and this hiatus is just "normal" burnout from putting so much of his energy in NIF for 3 years straight. I'm grateful for the change to work with hin, and I'm sad that we can't see the continuation or conclusion, but ... that's just the way it goes.