CHloe is my first yorkie so I really dont have anything to compare her on as far as potty training. I think she is about the same as my other dogs of diff breeds on that issue but with a much smaller bladder. However Chloe was I think 8 oz at 12 weeks when I got her and hypoglycemia was a HUGE problem for the first 2 months that i had her. SHe HAD to eat every 2-3 hours. I had to get up at least once in the middle of the night to make sure she ate. She slept in a large kennel/crate at night that had food and water available and a heating pad and blankets, but just to be sure she ate I still woke up and hand fed her some food. Most of the time she would eat on her own, but I slept better knowing she had eaten. I cant stress enough how important eating every few hours is. Nutrical is not enough. And give him karosyrup mixed with water if he starts getting lathargic or refuses food, even if you have to do it with a medicine dropper. This is what I have learned. Chloe was quite an experience the first few months. I didnt sleep for weeks and everyone said it was good practice for me having kids someday

CHloe never had anymore hypoglycemia problems after 5 months of age. At 8 months and 2 lbs she is pretty well potty trained and sleeps with us in bed at night. Good luck