Mermalair Fast Disco

Advanced strat. Requires you to jump right when you're at the disco tile, hold space as long as you can, and then crouch right before you land. Since crouching makes your hitbox shorter, you're able to barely make the jump without getting zapped. You also need to immediately jump again after making the jump to account for the tile you're standing on switching to red.
You're also able to do this strat on the second set of disco tiles in the exact same fashion but it's obviously super hard to get it that many times in a row. Saves a varying amount of time depending on how many times you successfully get the jump.