have you considered the advantages of learning using sugar?
no. it’s dangerous, and pointless.
you could, but chances are you’d melt anything that has crashed by doing that.
again, you could…but as @StoneD has mentioned already, a cold crash is absolutely not necessary.
patience, repetition, and a solid understanding of saturation/supersaturation/nucleation (which can be gained playing with sugar).
it’s gonna be a while (days to weeks), so you might as well start reading.