Yeah I tried to only give a few seconds more than necessary for the puzzle to be completed. I realized afterwards that I probably could have given the player more time though. I think I confused myself because originally the buttons were supposed to be levers and stay switched after you touched them, in that case the timer needs to be shorter so you need to use the echoes, but with the case of the buttons that need to be stood on I could have increased the timer since you need an echo to stand on it anyway