I've had my 16 week old dachshund/chihuahua mix for just under two weeks now. The house training is going well--the majority of his accidents happened within the first couple days I've had him, and he's gone about four days without an accident now. I take him out every 1-2 hours when he's awake, and he's able to reliably hold it 7 hours overnight. When I'm not home, he's in his crate, and when I am home, he's tethered to a table in my living room so I can keep my eye on him. However, I do want to see if he'll start going to the door to be let out, but his tether won't allow him to reach that far. Is it too soon to allow him a bit of freedom, or should I keep him on the tether? If so, for how much longer?