In order to prepare for GPAT you should be aware of the complete syllabus and exam pattern.

If you want you can make your time table to complete your syllabus on time and you get enough time for revision. 

You can refer previos year papers to get an idea about the exam and type of questions asked in the exam.

Choosing a right study material is very important to prepare for your exam. So, make sure you carefully choose it.

All the Best!!