3 weeks to go - Verbal Strat

Hi,

My GMAT exam is in about 3 weeks time. I am currently scoring around 600 Q43-45 V23-28. I really need to improve my verbal skills. I make the maximum errors in SC. RC isn't too bad except for the last RC passage where I tend to guess due to time restrictions. I also tend to take longer to answer CR but the errors aren't as high as SC.

This is the breakdown of the most recent GMATPrep.

SC - 7-8 errors
CR - 3-4 errors
RC - 3-4 errors

My strategy from here on: I have heard that SC is the most scoring on the GMAT Verbal section. Therefore, I think investing more time in SC is a good idea. I have the MGMAT SC guide and plan to relearn the concepts and attempt all the SC qs from OG 12 and Verbal Review. For CR and RC I plan to invest less time but make sure I attempt 10 questions of each on a regular basis (books: OG12 and MGMAT guides)

Would love to get some feedback regarding the same. Since I have 3 weeks and also plan to work on my Quant I need to have a plan that will definitely work. I need to get a score in the late 600s. Is it too ambitious of me to think I can work my verbal score up to a 35?

Thanks
Aanchal