Yay! Finally! I'm so glad this turned out so wonderful, and that Draco's doing so great. He was wrong before, but that doesn't mean he wasn't convinced he was right, and it's always hard to not only realise that one isn't, but to draw consequences and act according to it. So I'm very happy he's doing so.
I'm not sure Lucius and Narcissa will still be a problem, though. Maybe Draco will have to move out with Scorpius so they can't bother him or them every day. Seriously, I doubt they'll ever change their way of thinking.