Wouldn’t Mike Mew’s few reservations about Starecta apply all the more to your suggestion? If this is your problem I don’t think you should write off Starecta as a tool. You don’t need to wear it all the time but use it as an adjunct to mewing. Give your skull a chance to feel what it is like to the straight again and feel even level pressure heading up from the molars into your cheeks. It costs very little to make a rectifier with a dental tray and some mouldable plastic. Check Mike Mew’s video on Starecta and how his objections are really face lengthening from permanent wear and the worry that the splint creates a need that would ultimately have to be solved by building up the teeth (a bit as you suggested)

Thanks for responding, I checked out the sources you recommended and definitely wouldn’t want to do anything extreme based on the things you pointed out. I tried clamping folded toilet paper (1 ply folded twice into a tight rectangle) btwn my molars on the worn side and it evened my bite and chin symmetry much more than I would have expected from such a small bit, so it’s something I will discuss with a dentist, I’d just be afraid of changing my bite too much and ending up with TMJ issues.