Something I've done (with other breeds): Smear some peanut butter on the palm of your hand and offer it to your pup to lick off. As the puppy is cleaning your hand, say reassuring things, "good girl", "i love you", "love love love", whatever. It seems to be effective at introducing a different way for your pup to use it's mouth: kisses! Worth a tablespoon of PB to try, right?
p.s. Finding out who the pups breeder is (and contacting them) would help you get the answer to a lot of questions!