Should I take the AP Music Theory Exam?

I’m pretty well versed in music theory, having passed the Advanced level of CM theory with a score of 97%, and a longstanding background of piano and violin. I can whistle pitch-perfect. Would it be recommendable to take the AP Music Theory test or is that still a stretch without having taken the course?

I don’t know what the CM thing is, so I don’t know if you would already be good at this, but a giant part of the test involves listening to a piece of music and writing it all down. I find it incredibly difficult but I don’t know about you.