Hi Sgupta97,
GMAC has publicly stated that the Official Score that you earn on Test Day is within +/- 30 points of actual ability. Assuming a similar 'swing' in how your CATs function, most of your CAT score results show that you essentially performed the same each time (630 +/- a few points). You handle certain aspects of the GMAT consistently well, but you also make certain consistent mistakes.
Assuming that you took these CATs in a realistic fashion that matches up with what you will face when you take the Official GMAT, raising a 630 to the point that you can consistently score 700+ will likely require at least another 1.5 - 2 months of consistent, guided study. With just 9 days though, there will likely be a limit to how much you can improve. Thankfully, the GMAT is a consistent, predictable Exam, so you CAN train to score at a higher level - but you might want to consider pushing back your Test Date.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
1) Since March, how many hours did you typically study each week?
2) What were the Quant and Verbal Scaled Scores for each of your CATs/mocks?
3) When are you planning to apply to Business School and what Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich