Wait let me try to understand this properly. You are doing level 5 SOA *only* problems?
Imo this is not an ideal strategy. I agree, if you are limited on time, you should focus on SOA problems. But, you should focus on a blend of all SOA problems, not just level 5. The exam in aggregate will be about a level 5, but that will be a mix of various difficulties.
Also, CA made questions are just as useful imo. There’s only so many ways that you can ask these questions, and I think CA does a fantastic job of creating questions that were similar to the actual exam.
Edit: I see now that you were doing level 5 exams, which means you were likely already getting a blend of various levels. I also see now that you’ve done 40 exams. You will almost definitely breeze through the actual exam imo, that’s a ton of practice. I think I did around 20 practice exams and crushed the exam. I don’t want to give you false hope of course, but just wanted to say I think you’re doing a good job. Like I said though, don’t be afraid to do some CA made exams, they’re very useful!