I had my 12 pound Siamese mix neutered today. Naturally, when he came home, he was staggering and falling and it has been a challenge to keep him quiet as he is not a lap cat. I fixed him a bed in the hallway where he likes to sleep at night but he won't have anything to do with it. He keeps wanting to stagger around the living room and kitchen and inspect his territory about every 15 minutes. He's been home for three hours now. When will he settle in? He does not appear to be in serious pain. He just appears stoned.