Hi abansal1805,
A little over 2 months ago, you posted a similar story and goal (
https://gmatclub.com/forum/how-to-impro ... l#p1931394). Regardless of how you've been studying since that time, you appear to be scoring at the same general level. Back then, we discussed the possibility that you might have gotten 'stuck' at that level - and it certainly now appears that that is the case. By extension, it will take a certain amount of time and effort to get 'unstuck' and hone the necessary Tactical skills to score at a much higher level. As such, you would likely need MORE than 20 days of additional study (regardless of what study materials you were using) to hit your Goal Score.
It sounds like you're going to attempt to 'cram' over the next 20 days, but that type of approach doesn't often lead to great results on the GMAT. I think that the EMPOWERgmat Course could help you a great deal, but you're going to need to commit to roughly 2 months of consistent, guided study to earn that higher Score.
GMAT assassins aren't born, they're made,
Rich