Hi uditgopalka,
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, your 5 most recent CAT score results show that you essentially performed the same each time (about 600 +/- a few points). You handle certain aspects of the GMAT consistently well, but you also make certain consistent mistakes.
Statistically-speaking, raising a 600 to the point that you can consistently score 700+ will likely require that you commit to at least another 2 months of consistent, guided study - and you'll have to make 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. While there's no harm in taking the GMAT in a couple of weeks, you will almost certainly end up having to take the GMAT again. If you ultimately "need" a 700+ to apply, then THAT Score Goal has to come first - and you might want to consider pushing back your Test Date so that you can hone all of the necessary skills needed to lock-in that higher Score.
1) When are you planning to apply to Business School and what Schools are you planning to apply to?
2) Going forward, how many hours do you think you can consistently study each week?
GMAT assassins aren't born, they're made,
Rich