It might be interesting and rewarding to tinker with the player movement speed values in order to find something that is both challenging and doable. Personally, I feel as though the player could move more slowly and the trees could move more quickly.
This could also introduce avenues of added complexity; You can modify those values partway through the game to create a difficulty curve. (I recommend the research and use of the "Tween" node for this, since I saw you were using Godot)
I had some issues with value-setting myself; my game used to be outright unfair, but I made the whole thing move slightly slower and now it's just hear-tearingly hard.