It's not really what you're asking for, but since I cured my RSI in December 2022, I've been reverse-engineering how I did it and beta testing in 1-on-1 and group classes online.
My method has transformed throughout the testing process a few times, and has gone from a body thing to a distinctly body+mind thing. I've distilled some general body (and mind) development techniques and principles for improving blood flow around the body for loosening up tight areas and tightening up loose areas. (One hypothesis for why stretching/loosening exercises don't work for some people is that they need to first build some bodily slack by compressing/tightening up loose areas. Another is that many/most people naturally supplement explicit exercise instructions with implicit body or mind moves that others leave out because they're not articulated and are subtle/hard to explain.)
Again, it's not really what you asked for, but I'd be happy to do a video call and show you some stretching/compressing, breathing, targeted muscle activation, and attention direction techniques that work together to increase flexibility and blood flow if you were interested.
Highly recommend anything from Squat University. This book looks really promising https://squatuniversity.com/featured-links/rebuilding-milo/
Is there some sort of publicly-available, reputable grimore of at-home physical therapy exercises with instructions, descriptions of benefits (e.g. what specifically the exercise is targeting for increased strength or flexibility), and contraindications?