any tips on how tobgrt s ranknon last 3 staged for my last trophy for platinum. im currently struggling

I've reached the Morreau boss fight and holy hell, Ethan is slow as fuck. I keep dying because he is so damn slow and refuses to run. I managed to cross the bridges that raise temporarily, but now I'm stuck at what comes after. Ethan just doesn't want to cross the water and Morreau continues to catch up.

This is the first time I genuinely quit a Resident Evil game and I genuinely feel like I can't finisb the game.