I know I already commented on your game (I was part of the level 4 crew) I don't think difficulty itself is necessarily a problem at all!
In the context of a jam though, if I get stuck on a level I'll definitely give them a few goes, but after 5-6 attempts, I might start to consider calling it there. By that point I've played enough of the game to leave a comment and rating so!
I feel bad when I don't play through all of the work that someone's put into a game, and I'd love to have more free time to keep trying, but I also want to try as many games as possible!
Hope this helps, and please do let me know if you keep developing Switch!