Hi singh36x,
Based on your CAT results, your Verbal performance has been fairly consistent (+/- a few Verbal Scaled Score points that are likely due to lucky/unlucky guesses). The Q48 is an 'outlier' relative to your Quant Scaled Scores on your 2nd and 4th CATs - meaning that there's a pretty good chance that your current 'ability level' is right around 550. Statistically-speaking, raising a 550 to the point that you can consistently score 650+ will likely require at least another 2 months of consistent, guided study - and you'll have to make significant improvements to how you handle BOTH the Quant and Verbal sections. Thankfully, the GMAT is a consistent, predictable Exam, so you CAN train to score at a higher level. However, a 100+ point score improvement in just 2 weeks is likely too difficult to be considered realistic. There's no harm in taking the GMAT in 2 weeks (as Business Schools generally don't care if you take the GMAT more than once), but you could save some time, money and frustration if you push back your Test Date and give yourself more time to prepare.
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:
Studies:
1) HHow many hours do you typically study each week?
2) What specific study materials have you used so far besides the recent course that you mentioned?
Goals:
3) From what you describe, it seems that your Score Goal is notably higher than 650. What is your actual overall goal score?
4) 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