How Many NAHQ CPHQ Practice Questions Should I Solve Before the Exam?

I am starting my NAHQ CPHQ exam preparation and I am confused about how many CPHQ practice questions I should solve before I book the real exam. Some people say a few hundred is enough, others say I need to solve many more.

For those who have already taken the NAHQ CPHQ exam, how many CPHQ exam questions did you practice before you felt ready? Did you first solve CPHQ questions topic by topic, or did you go straight to full-length practice tests?

I also want to know what kind of NAHQ CPHQ study material worked best for you.I have used Udemy before for other courses, but while preparing for the CPHQ exam, I also came across Pass4Success as a resource for CPHQ exam questions.Did you use practice tests from platforms like these, or only books and notes? I am not sure if I should use something like that or only free materials.

My main worry is wasting time on low-quality CPHQ exam questions that do not match the real exam. If you had to start again, how would you plan your practice to pass the CPHQ exam on the first attempt?