Hi and welcome to YT it's sounds like you are off to a good start. My Buster is trained to go on the pee pads and outdoors. He prefers to be a big dog and go outside but the pads are great because he pee's frequently and has never learned to hold it for a long time so I am comfortable that he has a choice. It did take him a while to be consistent and we have occasional mistakes. I have not been able to figure out how to let him know that with just the front paws on the pad we get aiming mistakes. Trust their instincts with dogs they have a better sense of the dogs intentions and being as small as they are even a friendly big dog can hurt our little guys. In time he may get more comfortable but safer is better. Yorkies are wonderful companions and the unconditional love and kisses are the BEST.