Very creative take, for your first jam with only 4 days it's a great entry!
My recommendation would be to have a little more variety in terms of gameplay for your next jam, it feels a bit repetitive to do the same things so adding new mechanics, abilities or even some obstacles other than the gaps would have been a nice addition. Finally, this is just my opinion but I would separate the water bar into blocks, each block meaning the amount of water drained when you press space, because right now sometimes I think I have enough water but I don't have it. Keep up the good work cause it's a great entry :)