As a peds intern who took it in February (after maybe 7 months of residency), I think I took it at the right time. It's kind of a primary care exam, with a lot of adult medicine, which I forget a little more every day. It's not too hard, but not cake either. If you're doing IM, family med, or a transitional year, it's right up your alley. I am glad I took it and got it out of the way, while most of the rest of my class is just starting to schedule their exams, and the associated stress it comes with.
Just my 2cents