I like your thinking, I have a dual boot on laptop with windows 11 and LMDE installed, and its been a while since I booted to windows for personal use. Unfortunately for me I am still dependant of windows until Autodesk decides they will create the software I use for the linux environment as well. Until then, I’ll rock on with personal “freedom” of linux, while I’m a slave to the corporate / microsoft
I normally use timeshift only to snapshot the system on a daily basis, and if I am not certain what my “fiddling” will do with my operating system, I make a manual snapshot on timeshift before I proceed with what I will do.
In your case I’ll copy anything that is important you have, and restore to a earlier version you know it works and call it a truce, after that, I’ll suggest just to snapshot your system and not home folder