In short -- No :(
It is best for Yorkies to have a much smaller male than the female. Otherwise you run the risk of too large puppies for the bitch to whelp. They can plug the birth canal and an emergency trip to the vet is necessary for her to survive, let alone the pups.
The question is, since it really sounds as if you have dogs that you are just thinking about breeding and not really planned it out.... If this is just to have a litter of puppies to recoup buying your dog, or you love them so much that you'd like to have 'another', or family/friends are asking for a litter so they can have one --- please do searches on here to consider the risks. IMO, it's just not worth it.
Are you willing to risk your bitch's health and life just to have a litter of puppies that may or may not survive? It's something that all breeders to some extent have to deal with. When dealing with dogs that are very small, the chances increase that the bitch could die right along with her puppies even if one is an experienced breeder.
hth,
toodles