Oh hey this is actually super polished! The art and music are both so cosy and chill, and the puzzle design is really good for a jam with a nice variety in mechanics that overlap and interact. Blocking a laser with a rock then having to put that same rock on a pressure plate for example- that's much more complexity than you usually get in jam puzzles!
As the levels get bigger I think the darkness hurts the experience more and more. I simply can't memorise everything in time, so it adds a lot of essentially wasted time as I wonder around the level lost. So my useless, hindsight-driven advice would be keep the levels small and tight! Increase difficulty with density, not mass.