I know from my reading that 6 weeks is really too young to take a puppy from the litter, but I'm going to have to get my puppy this week. She is part of a litter that was taken from an elderly breeder who had to give up all of her dogs for health reasons. One of her relatives has the litter and wants to get rid of the puppies this week. Because of the original breeder's health issues, we're not 100% sure of the age of the dogs - 6 weeks is the vet's best guess. They are totally weaned and eating moistened dry food. What can I do to minimize problems from getting her so early?