Hello,

To get a 3 digit rank you have to practice alot and become expertise such that if any question is given to you,you can solve it within a limited time. if you want it then you have to score more than 95% of total marks. There is no revision. You have to read everything in a week and read it again in another week completely. In this way you have to cover the whole syllabus more than 10 times with full clarity and able to solve all the numericals accurately.

a month before exam try to give mock tests online so that you can know how you perform in a competitive environment. This way you will be able to make your weakness into strength.

Hope it helps!