newt,
whenever one can get out of the germ incubator, all the better. Going home is like taking a step back. For the first day or two. Then all of a sudden 20 steps are taken forward as the home surroundings, familiar surroundings, are one of, if not the best medicine! Just be sure to keep the bell just out of his reach after those 20 steps are achieved!
Positive news. Speedy recovery to your son.
P.S. What is your son's first name?