Hi navaljoshi,
You've described a problem in a somewhat vague way (since you haven't detailed the types of questions that you're working on or the context of how you've been studying), so it's difficult to make any recommendations until I have some more info. Thus, I'd like to know a bit more about your studies so far:
1) How long have you been studying?
2) Have you taken any FULL-LENGTH practice CATs yet? If so, then what were your scores (including the Quant and Verbal Scaled Scores)?
3) What resources have you been using so far?
4) When are you planning to take the GMAT?
The GMAT is a predictable, standardized Test, so you CAN train to score at a high level. We just need to make sure that you're studying in an effective way.
GMAT assassins aren't born, they're made,
Rich