Hey Aishwaryaa

All you need is practice and sharpness of your concept and theory.

Give more time to studies and cut off from all other entertainment .make a proper time schedule and solve good books .

And the progress will show result in some time don't expect that if you study for 4-5 days very hard your score jump from 100 to 200.

But if you give your 3-4 months regularly with proper dedication you will definitely improve and achieve a good score.

Any other query you can ask.

Good luck