Yo, I tried the game. The level design (artistically and objectively) is really good(I really like the Lava Level). And the subtracting time collected with total time played which I think is very smart. It's a perfect balance between risk and reward. I did find the player movement choppy. And the music is very chill(and unique in every level) and coupled with the appealing art makes for a wonderful casual platformer.
I do have some problems, mainly the player can easily slide off ledges, and platforms which makes it annoying to parkour the small platforms. Also, when the time shards breaks, I would suggest you add a little attraction towards yourself because it takes a little time to collect it all when it explodes and spreads wide(for the big crystals, the small one can stay normal).
Also, I noticed some invisible walls which the players can't across but the crystals can in the lava level.