I'm in a different part of the country but... in addition to RJM's suggestions..
-Most JC rosters are made up of kids within a local (few county) region, so it shouldn't take much to explore those options in his area. Also, the local HS coaches and travel coaches usually know these JC coaches on a first name basis, so use any resources there.
-It seems there are often a few "last chance" showcases regionally that schools will look to fill a few specific needs from.
-He may want to try to hook up with a summer college program. It is late in the game for that as well but there may be a start-up program or one that has a few spots open due to players backing out.
-He probably needs to narrow his school focus a bit. NAIA's are typically high academic and JUCO's are not (generally speaking). NAIA's are typically expensive and JUCO's are not. Does he have a career path idea aside from baseball? Are expensive private schools an option from a budget standpoint? Answers will perhaps help him further narrow the targets. It will be more difficult at this point to consider schools a great distance away.