I disagree that Yorkies can't tell time
Otherwise, how do you explain that our Yorkie would go to sit in her spot when it was her meal time, unless she just happened to sleep through it, that is! Also, how do you explain the fact that she would go sit in the front door and watch for someone to come home for lunch and again in the evening when she knew someone would be coming home from work? Yep! I'm convinced they can look at the clock and read it!
It really helps them to be able to look out. That passes a lot of time for them.
And I really do agree that people should take vacation to spend the time with them when they get them. You can train them a hundred times faster.