Hm... I am not sure. You would need to evaluate your weaknesses.
You may have to go through the Arithmetic (Number Properties) and some other ones again... such as word problems and geometry or may as well go through all of the quant books.
It is doable with that amount of time. I would definitely get the GMAT Roadmap from
MGMAT as it would VERY helpful to optimize your study routine.
I would also find what your weaknesses are (specifically not just quant). Find what your verbal weaknesses are and hammer those. Keep taking small exercises (not CAT's) frequently to check your level after each chapter/study session and keep at it until you improve. If you don't improve, you need to figure out why and possibly change the approach. Make sure you time those.
P.S. If after 5-7 days you are not seeing much improvement/difference in exercises, hire a tutor. Don't evaluate yourself with a CAT after only 5-7 days. It may not capture the difference and will send you down the wrong path.
Good Luck!
P.S. You can get it done Right, Fast, or Cheap. Pick 2. In your case, it is Right and Fast... keep that in mind.