My German shepherd puppy is 70 days old and I bought a rowtwiller puppy who is 40 days old 3 days ago, but it's becoming tough to handle them as they don't seem to be getting along. Their sleep schedules are different and both of them need extra attention as they are still puppies when they are awake which is affecting my sleep schedule as I only sleep when they are asleep. When they are awake lots of biting is involved and both of their vacation is not complete yet. Any suggestions how to handle this?