Hi robert1111,
Although I may not have the full story here, from what you have described, it appears that you are focused on taking practice test after practice test without any real learning in between. That said, I a great way for you to move forward with your prep and to truly improve your skills is by engaging in topical practice.
For example, let’s say you want to practice Number Properties. You can do so by answering 50 or more questions just from Number Properties: LCM, GCF, units digit patterns, divisibility, remainders, etc.
After each problem set, it's crucial to delve into the questions you answered incorrectly.
For instance, if you stumbled on a remainder question, take a moment to reflect. Was it a careless error? Did you fail to apply the remainder formula correctly? Was there a concept in the question that eluded you? This analysis is key to your learning process.
By carefully analyzing your mistakes, you will be able to fix your weaknesses efficiently and, in turn, improve your GMAT quant skills. Number Properties is just one example; follow this process for all quant, verbal, and DI topics.
Feel free to reach out with any questions.
Good luck!