I mark the date 'Read' in a custom column in Calibre
If I set the year Before 2000, it signals I quit reading (not my cuppa...)
2000 is the arbitrary date I used for any in my Paper book Library I documented in Calibre
I rarely Rate (other than I Quit

)
I do use the Count Pages PI (adobe Page count) and Grade Level
Edit:
I also use Imprint instead of the BPH's name
Obsidian vs their owner