I never measure my revision by the amount of time I spend on it so unfortunately can’t answer your question in the way you’d like it to be answered. But, I made sure that I answered every question in the textbooks, including the practice mocks, every past paper I could find (going back to 1998!) and all the papers by topic/ bronze/silver/gold papers on physicsandmathstutor.com
I highly recommend that website for maths.