Thanky you for your feedback! I think you've highlighted my biggest mistake in this jam: I solved too many problems by just adding more features instead of improving my level design. The blue pressure plate was supposed to make it so that the player couldn't just run through the map without ever rewinding. A much better solution would've been to do what Kaspian (my friend who developed the game with me) did in level 1. He used doors to lock the player in after they had pressed a button, removing the need for a forced rewind.
About level 3, try using your rewind after you've pressed the buttons ;)