Hello Aspirant, If of all you should focus on the strong hold topics which you have good grip, now its not much time left to a study a new topic, so your first priority is to revise your strong areas.More over here i am giving some easy and important topics which you should study

Mathematics

Mathematical Reasoning

Statistics

Height and Distance

Differentiation

Straight line, Circle

Chemistry

Bio molecules

Polymer

Chemistry in every day life

Periodic table

Chemical Bonding

Physics

Electronics Devices

Unit and Dimensions

Simple Harmonic Motion

Vectors

Modern Physics