He is still a baby. It takes most a long time to completely potty train.
Madison is a yr and a half, she still has accidents sometimes. She is outside trained and pee pad trained. I have Chance wearing a belly band for now, but we are working on it. I don't understand this but Chance has never pooed anywhere but in the kitchen. Which I am kind of happy about, because it's so much easier to clean than on the carpet. Madison though, whenever she has a poo accident she will go anywhere.
He is also to young to have run of the house, he should be in a smaller space unless you can have a constant eye on him. There are owners who have dogs that are a couple yrs old, and had to start from scratch potty training again. Yorkies are supposed to be very hard to potty train I believe. Good luck!
