Wow, you have some amazing practice test scores.
GMAT Club tests are known to be harder than the actual GMAT. So, your score on that
GMAT Club test is not a reason to be concerned.
Since you have a few weeks until your exam, you may consider doing various problems sets of verbal/quant questions as well as more practice exams. So, you could answer all of the remaining OG questions and take the remaining practice tests.
After completing each practice exam or problem set, you need to analyze your results. Begin by reviewing every question that you CORRECTLY answered. Take note of what you’re doing well and what skills and concepts are coming naturally to you. Take note of what question types you feel strong with.
Your next task, and probably your most important, is to carefully review each of your INCORRECT answers. When you examine each incorrect answer, you can use GMAT Club to seek out reliable explanations for the questions. You probably will find it helpful to read a number of the experts’ solutions to each question and stick with the solutions that make the most sense to you. Keep a detailed log of the questions that you didn’t answer correctly. For example, perhaps you got a rate-time-distance question wrong, an overlapping sets question wrong, two weaken questions wrong, and two subject/verb questions wrong. Once you have identified the types of questions with which you are least comfortable, strive to fill in any gaps in your understanding of how to answer these types of questions. You will find that by giving yourself time to strengthen your weaker areas, you will develop a level of comfort with those areas that you did not have before, and thus increase the probability that, if you see questions in those areas on test day, you will answer them correctly.
Unless you have missed questions simply because you have made careless mistakes, it’s very effective to use these wrong answer topics as a guide to areas of weakness that you can strengthen to improve your skills and, thus, lock in a high score. By following this plan, you should put yourself in a great spot for test day!