Hello! I am a new Yorkie owner, my Milo is 7 months old. He is a "bigger than average" Yorkie at 16lbs [He is big, not overweight, I hear s**t about it all the time, how he isn't a "real" Yorkie due to his size from people who don't have a clue] recently I've noticed that he has a bit of a dry skin issue, also his hair has spots where its brittle. Particularly the hind area where his hair is wirier than the rest of him. Suggestions?