Thanks, that's really helpful.
I think "shortcut" was the wrong word. What I meant to say was the most time-efficient way.
I like the suggestion to use a top-down approach; start with mock exams, uncover my weaknesses and use this knowledge to undertake targetted learning.
Generally when I take certifications I embrase the learning experience more than the certificate, but on this occasion, I just want to get this one passed ASAP.