CAT exam - what's the breakdown between install knowledge and code compliance?

I'm an audio technician with 5 years in commercial AV installs and I've been prepping for the CAT certification for the past 4 weeks. My practice scores are sitting around 71-73% and I need a 75% to pass. I feel solid on the installation and system design content but I keep losing points on the code compliance and safety sections - specifically NEC and OSHA requirements that aren't always front of mind when you're on a job site. I'm studying about 60 minutes a day.

I've heard the CAT exam is roughly 40% technical install, 30% system design, and 30% code and safety compliance - does that match what people have actually seen? If the compliance section really is 30% of the exam I need to treat it more seriously than I have been. Right now I'm spending maybe 20% of my study time on it.

The other thing I'm struggling with is the audio signal flow questions - specifically the dB math. I know the formulas but under timed conditions I lose confidence and second-guess myself. I've been using a practice approach where I work through the math out loud to check my reasoning, which helps, but it's slow.

Anyone else find the math component harder under pressure than in practice? I'm 3 weeks out and wondering if I should push my test date back or grind through at this point. My target was to hit 80% on practice before sitting for the real thing.