Maybe the OP just does not know much about the risks of breeding such a tiny Yorkie. He left in a hurry and that says a lot. I am not surprised that he is having a hard time finding a stud .
Gosh, My Suzi was already that weight at 9 weeks old ! She is now a hearty 7lbs, and I still would not ever consider breeding her. Just because of the great risks of something going wrong.