(giggling) This is exactly why all three of mine sleep with me!
Although a piece of advice that I suffered through and still do at least 1 night a week.
Everytime my Yorkie would wake up at night I assumed it was to potty. To this day she STILL wakes up around 2:00 AM at least 1-2 nights a week.
She can clearly hold her urine 8-9 hours, but if she wakes up she doesn't go back to sleep cause she knows we'll take her out to pee.
I would hate to see you end up in that same routine as me. Especially since my Yorkie goes outside to potty. With living in Pa., our temps are extreme either way. Those 2:00 AM potty calls in the middle of January ARE NOT FUN!