Finally sitting for CBHCM next month — anyone else feeling underprepared?

So I've been in behavioral health care management for about six years now, and my organization basically nudged me toward getting the CBHCM certification before our next accreditation cycle. I signed up feeling pretty confident, but now that it's four weeks out I'm kind of spiraling. The NCQA competency domains are way broader than I expected — utilization management, quality improvement, compliance... it's a lot to hold in your head at once.

I've been using a CBHCM practice test I found online to gauge where I'm at, and honestly my scores are inconsistent. Some days I'm hitting 78%, other days I drop to 62% on the same topic areas. Behavioral health ethics and grievance/appeals processes are killing me specifically. Has anyone put together a solid study guide approach that actually helped them feel ready? I'm doing about 90 minutes a day right now but wondering if I need to bump that up.

Any exam tips from people who've already passed would be genuinely appreciated — especially around how to manage the clinical vs. administrative question weighting.