hiya!
my answer may not be the one you’re hunting for, or maybe it is, who knows...
before we begin, let’s go background info. i am a year 10, studying for gcse. background info = done. righto. so i don’t use a revision timetable. but i do revise. sometimes. i don’t like the lack of freedom that comes with having a revision timetable, i like to do things as and when i want in the day, and that can vary on a day to day basis, so for me, a revision timetable just doesn’t cut it. i make to-do lists. firstly i’ll make one for the week, and see what i have to get done first and then additional stuff i could do comes after. then i’ll section and assign bits and pieces for each day. this means i don’t have the same thing every day each week, it gives it some variation. and even then, rather than writing down the subject e.g. geography, i’ll split and write exactly what i’m going to do e.g. tectonic hazards. so everything is nice and small and manageable.
this may not be what you were hunting for, but it’s something. hope it helps 😊