congrats on your beautiful healthy girls! so very sorry you lost your lil boy
are they still having trouble going poo? I'm pretty sure it's because of the Royal Canine for Yorkies, unfortunately, that is causing this. If you switch them over to a good puppy food, they will hopefully start going poo easier.
Good luck & please post some new pics of those gorgeous pups & their proud mommy & papa
huggies & snuggles, Angie & the spoiled brats