I love seeing other Godot games! The mechanic was neat and the sound was a really big help in anticipating jumps. The aesthetic was really nice.
The controls were rough. The W key for jumping is straining on my wrist. Also, while WASD is common and should be supported for jams, Godot makes it really easy to add the arrow keys as an option, and use of a gamepad. You could have up and spacebar, and the bottom action button on a gamepad all as jump options. And it'll take you only a minute or two to add that. The switches felt a bit slow in coming. I spent more of the time waiting for night to fall than I did jumping.
Well done for a first game jam!