Thanks for playing my game :D
The thing about T rewind is the more speed object has when the button is released the more speed the object will gain. The player has to utilize this speed to get up. However I am finding out that its quite difficult for lot of people because it is at maximum speed when its just about near the ground. That makes it a mechanic requiring sharp reflexes. Honestly I am thinking of removing that mechanic and just keeping rewind mechanic in the post game-jam version.
Again, thanks for playing and for the feedback!