Realistic CMP study timeline while working full time — 8 weeks enough?

I've scheduled my CMP exam for about 8 weeks out and I'm starting to second-guess whether that's enough time while holding down a full-time director role. I can realistically commit about 1.5 hours on weeknights and a 3-hour block on Saturday mornings.

The domains I'm most comfortable with are digital strategy and analytics — I've been running performance campaigns for eight years so that content is mostly review. My weaker areas are the classical brand management frameworks and the consumer psychology models that I rarely use in practice.

I've been using the CMP Consumer Behavior and Insights practice quiz to expose gaps and it's been humbling — there are more academic models tested than I expected. For the marketing certification content overall, is 8 weeks reasonable or should I push the date back?

Also wondering whether flashcards or practice tests are more efficient for the final two weeks of prep — curious what worked for people who passed on the first attempt.