Hi and Welcome to YT!
I would start out with a softer bristle brush ...even a cat brush. Try it on your arm first to see how it feels. You want his grooming experiences to be pleasant, happy events at this stage of life. Rubber bristles will pull the hair and cause discomfort.
I would get some puppy shampoo from a petstore, not a grocery store brand. Mane & Tail is great for when he's older, and people can use it too.
I can't make a guess to the skin stuff without seeing it, best to have the vet look at it as you have an appt already.
Good Luck! |