JEE Main aspirants — how are you splitting time between full mocks and chapter revision?

Posting this for the JEE Main crowd, since there isn't much entrance-exam discussion here yet.

My syllabus is about 80% done. I'm currently doing one full mock a week and spending the rest of my time finishing the remaining chapters and revising old ones. My scores have plateaued for the last three mocks, though, and I can't tell whether I need more mocks or more revision.

A few specific questions:

• How long do you spend reviewing a mock? I've been doing about an hour, which I suspect is too little.
• Do you revise by subject (a whole week of Physics) or mix all three every day?
• When did you move to two or more mocks a week?

No coaching-institute sales pitches please, just what's actually working for you.