My puppy hates being alone at night. As soon as the lights go out and we leave his presence, so begins his crying. He's staying in the bathroom until he's potty-trained. The floor of the bathroom is lined with newspaper, he's got two toys in there, his blanket, and a wind-up ticking clock. There's also a nightlight right across from the bathroom. Is there anything else I can do to make the nights easier for him? His little cries break my heart.