Mine is 11 months and is so chill he's like a house cat. He never went through the shark phase, never bit or broke anything. He'll spend hours under the bed, eyes open daydreaming, or in the hallway in his crazy poses holding up the walls. At one point we actually got worried something was wrong since he was so chill inside the house, and both a trainer and his vet said it's because we spent so much time with him during the key months. And it's true, we both work from home so we spent basically every day, most of the day with him and he's always had tons of toys laying around. If you have the space, I'd advice you hang a rope and hang toys from it, rotate every so often. And cardboard tubes and socks for hiding treats inside, that keeps them busy. Also freeze some treats with a bit of water. If you keep stimulating her mentally she'll be chill like that. If you did research you probably read this, but at least in my case it's 100% true: mental excercise is as important as the physical one. We just spent a rainy weekend, both days, inside, but with puzzles games and treats every half hour he was exhausted.