Hi sakshi1995,
If it has been 2.5 months since you last took a FULL-LENGTH CAT Test, then it's not clear what your current "ability level" is right now - and we really need that data before we can discuss how you should best proceed with your studies. As such, I suggest that you take a NEW CAT sometime soon; you can access 2 for free at
www.mba.com. Make sure to take it in manner that matches-up with how you will take the Official GMAT (re: take the FULL CAT - in the same section-order, at the same time of day as when you plan to take the GMAT, etc.). Once you have that Score, you should post back here and we can discuss the results and how you might best proceed with your studies.
1) What type of study routine have you been following over the last 2.5 months?
2) When are you planning to apply to Business School and what Schools are you planning to apply to? If you are planning to apply soon, then what specific application deadlines are you facing?
GMAT assassins aren't born, they're made,
Rich