Dear Kunal,

In order to preapre for GLAET entrance exam you should work on your concepts in the PCM subjects. Try to build your fundamentals strong. 

Try to give extra attention to the topics which carries more weightage in the exam. 

To score good marks time mangement is very important so try to solve as many as mock test series for your practice.

You can also refer to previous year papers to know the exam pattern and to know the level of the questions.

Good Luck!!