Ok. I didn't want to ask for any help but I am legitimately stuck. I cannot for the life of me figure out what those stupid white upside down Y's mean. I feel like the area I'm in is trying to teach me, but it is not sticking. I have even made a ton of progress and only have to puzzles left, but I don't actually understand how I've progressed. Every time I think I have it figured out, I try what should be right and it isn't. I've progressed so far without learning anything. Please, somebody. Don't spoil anything else if you can, but just tell me what those upside down Y's mean.
You have to "feed" them a mistake. So leave one dot behind in the same are as the upside down Ys and then it'll work. It confused me at first too.