Follow the steps mentioned below, you can score much better than the 60 percentile.

1.Prepare a timetable and strictly follow it :

Time-Table helps you to plan the short-term and long-term goals accordingly. Take short breaks in between.

2.Revise your subjects regularly:

The revision would help you to get a good grasp of all the concepts.

3.Solve previous year questions:

Whether you are preparing for any exam, your preparation is incomplete without solving previous years' papers.

4.Evaluate yourself:

Evaluating yourself from time to time is crucial for effective preparation. Attempt mock tests to evaluate yourself.