HI CDF20037,
With such a short timeframe, you'll have to work efficiently while still approaching your CATs correctly. There's a reality to Test Day that you CAN train for, but you have to be detail-oriented about how you take your CATS. As such, you have to take the FULL CAT (including the Essay and IR sections) every time, at the same time of day as your Official GMAT, away from your home, in a realistic and test-like environment, etc.
As far as your goals are concerned, these days the 80th percentile in Quant is above a Q49 - which is a score that most Test Takers cannot achieve. Thankfully, if your Verbal Scaled Scores continue to be strong (around V40, give or take), then you do not need a Q49 to score 700+ overall.
Using a Q36 for comparison purposes, you're likely decent at much of the 'math', but you have some 'weak' areas, likely make lots of little mistakes and are missing out on lots of 'strategy-based' points (especially in DS). Improving in all of those areas is a lot to work on in a short period of time. Thankfully, the GMAT is a predictable Test, so you CAN train to score at a higher level - you just need the proper resources to do so quickly.
GMAT assassins aren't born, they're made,
Rich