Well I was told about 10lbs. Of course Moose just went to the Vet sat, and at 3months she's hitting 3.5lbs. So maybe their weight equally their age
Just kidding. But yeah do you have any idea the size of the parents, that's usually a good way to determine.
So here's a question for you, does your baby have looooong legs? The vet told me moose looks like a giraffe (which is my fav. wild animal so no big there). I haven't really ever seen any other yorkie-poos so I don't know if the leg thing is a normal or if moose is just taking after me!!