It looks very polished for a game jam submission, congrats on making a very cute and awesome game. I dont really dig the camera controls, but appart from that, everything else is amazing. The puzzles are very well thought and it makes you think harder the more you advanced. The graphics are simple but get the job done pretty well and the music is very relaxing. I think it fits very well with the ambient of the game.
The use of the rewind mechanic is fenomenal and I overall really enjoyed the game.