[Potter]

Welcome to YT. I can understand why you put him in the bathroom during the day when you work but at night too? Its too long of a time for him to be alone.I can understand people need to work but maybe he can sleep in his own playpen and crate in your bedroom at night so that at least he can see you? Maybe you can try one of those playpen/xpen with a crate in it and you can move it to the bedroom/living room etc wherever you want it to be. It will be better than in the bathroom. 9 weeks is very young. He is not going to be spoilt just because he doesn't sleep in the bathroom. Yorkies are very intelligent and they do thrive on having human attention.