Not very many NGN case studies on archer?

So I have used only 37% (760 questions) of the "classic" or old gen questions and 44% (391 questions) of the new gen questions and I have noticed my last two readiness assessments and one CAT exam I have had no case studies, I passed my CAT exam in 85 questions and gotten a "high" chance of passing on the readiness assessment but I feel like it is not super accurate due to the lack of case studies.

Has anyone else had this issue? Have I already gone through all of the case studies? I don't take my exam until May 30th and am in my last couple weeks of the archer 6 week study plan, I am scared I will feel too confident if I continue to get high scores only to fail the nclex-rn because the archer exams weren't accurate. I am stressed🙃