Hi NBAGMAT2020,
Since you are interested in some highly-competitive Schools, you would likely find it beneficial to speak with an Admissions Expert about your overall profile and plans. Those Experts should be able to answer your Admissions questions and help define the specific areas of your profile that could use some improvement. There's a Forum full of those Experts here:
https://gmatclub.com/forum/ask-admissio ... tants-124/The two Official Scores you noted are considerably lower than the Average GMAT Scores at each of those Schools, so it's reasonable to assume that you would need to score notably higher to have a good chance at receiving in invite to any of those Programs.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
1) When did you take your 2 Official GMATs and what were the Quant and Verbal Scaled Scores for each attempt?
2) What type of study routine were you following over the last 6 months? How many hours did you typically study each week?
3) Have you used any other study materials besides the course you mentioned?
4) On what dates (or approximate dates) did you take EACH of your CATs/mocks and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
5) When are you planning to apply to School? If it's sometime soon, then what specific application deadlines are you facing?
If you took either your Official GMATs at a Test Center, then you might also choose to purchase the Enhanced Score Report. While the ESR doesn’t provide a lot of information, there are usually a few data points that we can use to define what went wrong on Test Day (and what you should work on to score higher). If you purchase the ESR, then I'll be happy to analyze it for you.
GMAT assassins aren't born, they're made,
Rich