Your son doesn’t need to rent an apartment near his college (and buy a car? Really, that is NOT the school’s responsibility). He needs an apartment near a computer connection, and that could be just about anywhere for the next 2 months. THOUSANDS of sublets available around the country from THOUSANDS of college students having moved home. You may live in the boondocks, but there must be a city in your home state or a city near his college that has a room, with computer access, and the ability for him to get some groceries and stay isolated.
He doesn’t need a car as he can’t go anywhere. You are making this much more complicated than it needs to be for him to finish his classes for this semester.
And I don’t understand how you have computer access to post on CC but he can’t have it to access his classes. Many schools are posting the lectures so that students can watch at any time. Maybe service is better at 10 pm or 7 am at the library parking lot?