My first gut reaction - act just as normal with your everyday life as any other day, act like you think he will be staying at your house, sleeping in your bed, doing things as a family. Have you scheduled some time off of work now for this week? Even if it isn't spent with H as a family, won't it be nice to have S4 with H while you get some pamper time for yourself?
Most important!! don't let your nerves get in the way of being natural.
Live your life while you are still living. Riding the trail less traveled.
