You really have two startups between you and H, don't you, with his job and your setting up the new practice? Don't forget to keep an eye on your own schedule with the everlasting "to-do" list when you reserve time off.
Can S20 get some kind of office job where his splint isn't a big deal? A lot of guys prefer to work outdoors, especially in summer, but in the real world, many of the jobs are in offices. Getting some experience with office work realities now could be helpful for a job search later.
Thanks for the Fathers' Day greetings!
Joe
My sitch More importantly, Light A Million Candles