CPM plant mechanic exam — hydraulics section is wrecking my practice scores

I'm about 4 weeks out from my CPM exam and my overall practice scores are decent — sitting around 74–76% — but every time a hydraulics or pneumatics question shows up I'm losing points I can't afford to lose. My background is primarily electrical and instrumentation, so fluid power systems are genuinely foreign territory. I've been studying 2 hours a day but most of that time has been going toward my stronger areas.

I picked up a hydraulic and pneumatic power textbook a colleague recommended but it's pretty dense and doesn't map cleanly to what I've seen in practice questions. I'm getting tripped up on flow rate calculations, actuator sizing, and anything involving pressure drop across valves. The conceptual stuff I can usually reason through, but the calculation-heavy questions are where I drop 10–15% of my score.

Has anyone with an electrical background managed to get the fluid power section up to speed quickly? I'm trying to figure out whether I should dedicate my next 2 weeks almost entirely to hydraulics, or whether it makes more sense to shore up my weaker mechanical systems knowledge at the same time. Any specific practice resources for this section would be a huge help.