Call the universities and do the same.
Find an astronomy club and go to star parties.
SandraDodd.com/strew/deblist
photo by Amy Milstein
"My worry is that I am needing to do something bigger/more."I responded:
If you don’t feel like you’re doing enough, do more.
Accept the uncomfortable feeling as you would hunger or sleepiness, and act on it, a bit. See if that helps. If so, do more.
Instead of offering suggestions, do things for him, and with him. There are lots of ideas on my site (and other places you could google up) but here’s a list Deb Lewis wrote a few years ago that I really like:
Deb Lewis wrote that, at the beginning of a very long list called "Things to do in the Winter." Most activities are indoors, and could be done by people even near the equator, except for the snowshoe part.