twocats Looking at your markings I'm wondering if I should switch to letters instead of numbers, but then since I have over 26 I'll have to do AA, BB, etc at the end. Letters feel more "right" to me.
I go back and forth about this.... IMO the best way to do, which I don't always do, is this:
Analyze the score to find sections that have the same theme or other commonalities, those would be labeled similarly. For example, A1, A2..... then if you need to break them up into smaller pieces, you could do A1-1, A1-2 etc.... This way you don't run out of the alphabet, and you see connections across the score.
This takes more time on the front end, so the several pieces, I've just gone from the beginning and labeled A, B etc. so I do indeed sometimes get up to AA etc... This "feels" more efficient because I can start practicing right away, and then use those rehearsal marks for "drop in practice etc....
just fyi!