I feel like the losing/gaining mass from damage/dash wasn't utilised to its full potential. I'd play a movement puzzle game with those mechanics. It's really fun even like this. Forget about the dash, the smallest form is absurdly light and fast and doesn't need it haha
I like that the timer encourages a speedy approach and the fact that you have to go back to the starting point. I had a little trouble with the controls initially, but I absolutely zipped through the levels once I figured them out. Also found a little bug where spamming jump and dash lets you fly lol. Either way there's potential for interesting movement tech.
As an audio person, I really liked the orchestral Ghibli/epic music. I sat around listening to the exit track, it was really good! But maybe a bit long for its purpose. All the water droplet sounds were lovely, especially the pick-up - it's like a water-coin hybrid of sorts. The garden tool dialogue incorporating sounds of the tools was a nice touch as well, though I wish there was more than the one audio sample.