That's cool, you made a great job. Puzzles are a bit tricky because there will always be players who struggle and there will always be players who think it's too easy. Making good puzzles that keep the player engaged is very hard but I think you made a great job!
A good way to guide people who are overwhelmed with the puzzle is to make hints available but only for the players who need it. That's what I heard and it seems like a good idea. Hope it helps you!