As I said, you can have both LTS and a regular version installed at the same time without issues, they show up as different programs entirely. So no need to abandon LTS entirely.
LTS was released in late october 2022 (version number of the current LTS download is 2022.0.1.31 so it still appears to use the same version!) so it's about 10 months old at this point - it's lagging behind on features quite a bit and the timing of the new project format was quite unfortunate. I couldn't see anything about a new LTS release on the roadmap so presumably the next LTS release won't happen until the 2 years of support has passed? (in ~14 months from now) Scratch that, an upcoming update to LTS for the end of this month was announced today. No info what features from the bleeding edge will be ported over to LTS yet though...
In the worst case I suppose I could send you all the code as text files or something so you can paste it into a fresh project, but it'll be a pain to reassemble all the events and object relationships so I wouldn't really recommend this approach...
For up-to-date information on this stuff (LTS stability / project format queries) it's probably easiest to check in on the official forums, there's a shortcut to open the GMC in your browser from within Game Maker (Help --> Game Maker Community). I used to be a moderator but I've never been involved with actual GM software development so I have very little knowledge about how it works under the hood.