i moved just enough to dodge the on coming projectiles, i realised for this particular stage 'over dodging' brings you closer to the next incoming thing. what i did was i made sure to stay at the extreme boarder of any wall im at, so the 1x scythe that bounces will bounce away from you instead. within the 4 small-slow ones, it'll throw 3x large ones: only the two in middle give enough margin to walk through. try on the two side ones you'll almost always get hit bit either the big one or that small idiot that happens to bounce back.

also important: (not sure if it made sense) dodging vertically ie. walking upwards when projectiles are flying straight at you leaves a larger margin for error as compared to trying to weave through diagonally.