Hii

You can crack any exam with self- study. But for this you need to fully Determined, Confident & Focus. You should not get distracted by any entertainment device.You need to devote your time for that exam in order to crack it. According to me you should start your preparation from now.

I am providing a link- It includes best books in detail-Best Books for CAT Quantitative Ability (QA), Best Books for CAT Verbal and Reading Comprehension (VARC),Best Books for CAT Data Interpretation & Logical Reasoning (DI & LR), preparation tips for CAT-

https://bschool.careers360.com/articles/how-prepare-for-cat-varc

https://bschool.careers360.com/articles/best-books-for-cat-preparation

If you need any kind of help feel to reply back I will be more then happy to help you.

All the best.