You could start a new run or you could try using my mods along with MattieFM's Mod Loader in order to manage mod saves separately https://mattiefm.itch.io/fear-and-hunger-mod-loader.
I will say that i haven't personally used MattieFM's Mod Loader so i can't really guide you past this point.
Do let me know if there's anything else you need help with though!