Question on best order to study units – Are topics extended at higher levels?

I’m just starting CIMA Operational level, self-studying, and wondering whether to study Management level before taking the Operational exams.

If, for example, P2 covers some of the same topics as P1, but in more depth, then after studying P2, the P1 exam would seem a lot easier. So, I’m thinking of studying all the Management level units (and maybe even Strategic level) before taking the Operational level exams. P1 etc should seem straightforward after getting to grips with P3!

Does this make sense, or should I just study for each exam one at a time?