Puppy settled down for a nap on his own!

At first I thought maybe he was sick because this isn’t normal for him then I realized I usually have to put him in his play pen to settle down after our walk. When I do that he chills out and naps right away. But today he took himself to his favorite spot on the couch and curled up and went to sleep! I’ve been waiting for this day! He’s six months old. Hope this continues but so proud of him!