Oh Lemonlauren 15 weeks is early in the training but from what you say he is doing well......I do admit that I did not have alot accidents as I was home and it was easy.....but you are right it does take alot of your time and it may be helpful to crate when you cannot watch him......while my boy can hold it pretty much and is trained my girl that I got at 7 months can't hold it long and doesn't ring.....she is getting it but will stoop and go if we forget the time interval....so I know the feeling....lol......rain can be a problem but snow not so much.....