I would like to suggest a slight amendment for this guide: https://discovery.endeavouros.com/encrypted-installation/btrfs-with-timeshift-snapshots-on-the-grub-menu/2022/02/
It is a well-written, wonderful, newbie-friendly guide. Would it be possible to update it with the outcome of this topic?: Grub-btrfs - #2 by BluishHumility .
Basically, adding the inotify-tools installation at the end of the guide as an option to update the GRUB entries with the Timeshift snapshots automatically. I understand why the author did not add it in the first place, but I have an assumption you might share that beginner guides are read by people who know nothing, or only have basic knowledge about arch/eos, so they would find it very useful. This is coming from a newbie myself.