Your current scoring level right now is about what you should expect to get on the GMAT in two weeks - it takes longer than that to make any substantial change. I know that you only need 20 more points, but you can't guarantee that any changes made so quickly will be solid enough in two weeks that you can definitely hit your score goal. I know this is likely not what you want to hear, but you probably need to give yourself a little more time.
You're almost at your goal, so I'm wondering whether there are some small changes we can make that will help to get you there more quickly. Use the below article to analyze your most recent MGMAT practice CAT, then come back here and share your analysis. We'll help you figure out what to do from there:
http://www.manhattangmat.com/blog/index ... ice-tests/