Yorkies eat little by nature because of their size.There is NO reason to regulate how much they eat!!! Let them eat all they want in 15-20 minutes! Why keep a pet when you can't even feed your pet the amount of food they need??!!
I just can't stand people who does this!
Oh I forgot to add, is she feeding him 3 times a day like it is supposed to be for a puppy? Make sure she does!!! And don't forget the snack before bed and some treats! Argh!