@Rapid_black_puffin I have not taken the SIE; I am studying for the Series 65. However, as a retired business professor (I was full-time for 30+ years), I can tell you what works and does not work in terms of exam prep and studying in general.
The others who replied to you mentioned limiting memorization are absolutely on the mark. You might wonder what to do if you do not memorize. Instead of focusing on memorization, try to comprehend the material so that you could explain it to someone else, if necessary. While you are studying pretend that you have to be able to tutor someone else or explain it to someone else. Then, actually try to do that, even if you are talking to an empty room. It will feel awkward at first, but it gets easier with practice.
Comprehension of the material or being able to explain it to someone else (maybe try to think of examples if that helps), will mean that you know the content - memorization is usually no longer necessary.
It is true that most of us may have to memorize a few topics, formulas, etc. However, memorizing a lot of content does not work well for many students because it is hard to retain long enough to take a test. Second, it is very difficult to apply content to test questions if we do not truly understand the content. Third, exam questions may be written in a way that is different than how we memorize content. Fourth, it might actually be a good idea to retain the material since it may be useful in a future career!
I also agree that it will be valuable to strive to raise the percentage correct on your practice quizzes and exams. As you study to improve comprehension (knowing the material and being to explain it versus memorization), I think you will find that you can raise the percentage score. See below for more on this point.
I have a few other general suggestions. One is to click on “Explanation” when you take practice questions even if you are getting the correct answers. Read the explanations. I find that I pick up on nuanced, though critical pieces of information, in those explanations.
Take practice questions/quizzes every day even if you cannot do an entire practice exam. I take 10-question practice quizzes off and on during the day when I have a few minutes. I am striving to score between 92% - 100% on every topic before I take the exam. I will score in the 70’s and 80’s on some topics when they are new and feel like I will never get that percent up. Eventually, I get there, but it takes a while. Keep taking more practice quizzes on those topics, work on the explanations, and you will get your scores up. When you are stuck on content or do not understand something, post a question about it.
Pay attention to every word in a question and to every word in the possible answers. Be careful of changing your answer unless you are absolutely sure about it.
Good Luck!