I have an 18 month old Yorkie female, Lexie. She is a good dog and behaves pretty well. My daughter gave birth on July 1 to a precious little boy, Lawson. They are at my house a great deal and I will take care of Lawson when his Mother goes back to work in September. Lexie constantly licks Lawson, particularly his feet and head. I need some tips on how to transition her with him. She isn't territorial or vicious; she just wants to lick him. Any tips?