Tell the timetable about what to study on that day and which subject is more important to start first for( IIT)
Begin with the NCERT books first and then go for advanced books.
All the best
Everyone has there own capacity to study what suit me can suit you also is not necessary, so in my opinion you prepare your own timetable based on your reading capacity.This will give you interest & boost your energy.
As per subject concern all three subject has same importance of 12O marks each so you have to give equivalent effort if you want to crack jee Advance.