My cousin was able to crack the JIPMAT in one attempt. She cited the following tips that helped her crack the entrance exam 

Quantum 

The level of difficulty of this section is extremely easy because the questions are very basic. Just be

•  well-versed in your basics 
• speed up your calculation skills.

VA

• Improve your vocabulary by reading books and learning new words. 
• Practice the words you already know
• Practice the basic rules of grammar
• Learn maximum idioms/phrases

LR

• Learn as many tricks as you can 
• Practice more and more only then you will be aware of the nature and variety of questions asked

Keep studying and don’t give up.

Pro tip: Solve a lot of Mock papers and analyze your mistakes.