Not sure how I feel about the cooldown system in a platformer like this. On one hand it rewards exploration and makes for cool navigation puzzle, on the other hand having to wait at every failure hurts the pacing. I feel like you could've auto refilled as soon as you touch the ground and would still have kept the same effect.
Other than that it's really well done, hope you keep experimenting like this, great work! And that sprite is cute AF <3