Just a thought...do you think that an older Yorkie (1 year +) would be better for Chris's son? I have two 5 month old pups right now, and have a 2 year old Yorkie back home in CT, and let me tell you...when I had my wisdom teeth out, the 2 year old was just amazing. She had matured to the point where she didn't need to constantly play and play and play...I couldn't really hang out with the babies because I was in so much pain and they were so active. My 2 year old just laid by me and cuddled. This is just my experience, but Yorkie puppies are a LOT of work
Maybe you could get an older Yorkie from a breeder who is phasing out one of their babies they used for breeding.