Draven and I kept him in a box full of shredded newspaper, and cloth, and I wouldn't leave home for very long at a time, unless he was with me. One day I came home and he was not in the box (quite a leap for a little guy with a broken leg!). I looked around, and found him in the corner, and he started growling at me. Poor baby! We kept the box covered after that. Some mornings before we got up, we heard a shrill cry that sounded somewhat like a bird call. It was the baby's alarm call, and I would run and pull him out of his box.
The baby was old enough to go to the washroom by himself, but wouldn't dirty the nest, so every time we took him out of the box, we would right away put him onto newspaper, and wait until he went, which was quite soon after, so he never had accidents on us. I bought puppy milk formula for food (don't use other kinds of milk please!) and he started refusing the milk at the right age, I didn't have to do anything!