Analyst notes would help you fail?

I finished my first readings recently even though i struggled to breast the tape. I was mentally exhausted. My next strategy is to answer a lot of practise questions as much as possible. It has always worked for me by helping me reinforce all I have read. In this case of CFA,maybe it wiill help me remember cos right now I can barely remember all i have read As a rational human being, i am looking for the cheapest source of questions. I found out that Analyst is cheaper but I ain’t just comfortable with that. How reliable is analyst notes for practise questions. Am i on the pathway of failure? Please influence my decision.