Our GSD pup will be 10 weeks in a couple days. He has been a little mouthy this whole time but it seems to have gotten more intense/harder. He is clamping down more and we pretty much cannot snuggle him or be down at his level even because he will bite your face, ears, and even head. What do I do? Is this normal and with time and consistency it will pass? I want my kids safe. He bites pretty hard. He hasn't drawn blood so that's good. He had moments of tenderness but they seem less. I need suggestions and almost reassurance that we'll get through this stage.