I only leave Princess for maybe 3-4 hours a day, maybe 3 times a week max and that's not every week. If I do have to be gone for an extended period of time I always bring her to my parents where I know she will be spoiled & loved.
I worry about hypoglycemia because Princess will
not eat or drink when I am gone. She will not play with any toys or chew any chews. (
everything is untouched when I get home, her eyes are sleepy, she runs to go drink water, etc.)
When she was younger she would find things to destroy, now she just sleeps. Neither of those things are benefiting her at all. Yorkies are very social beings. I think it is rare a yorkie owner can even go to the bathroom without an extra shadow, they thrive on and crave human attention literally 24-7.
Good luck with whatever you decide!