How much time should i study a day to get all india rank one in iit jee

Dear student,
Dont plan the number of hours you will study per day
But plan according to the number of chapters you will complete per day

Because it is possible that one student A studies for 10-12 hrs and completes only one chapter, while other student B studies for only 6-8 hours and completes the same or even more than a chapter.

How many hours doesnt matter. How many concopts have you learned today that matters