My puppy is the same age and going through the same thing. He is really healthy and I have been searching the web trying to find out what is causing the flaky skin and patchy fur. I can't find any thing that a puppy might have to cause those things. So I am pretty sure this is just a weird puppy stage!! I am still going to keep a close eye on him But I am pretty sure he will just grow out of if. He went through a flaky skin patch a couple of weeks ago. Then it was gone this last week now today it is back. Lets keep each other posted as to what is going on with our puppies
Ps what do you feed?