You don't. He can take the point and only pay $207 if he has no money. If he doesn't want the point he''s going to have to pay the statutory costs. If he doesn't want to do either he must go to court regardless of the time it takes him. Courts regard their time as the first priority, not your son's.
A lot depends on where the ticket was issued. In some courts a lawyer may appear on behalf of your son and perhaps have the fine or other penalties reduced (maybe significantly).
Here are the websites of the counties that are potentially involved
If you find out which county it is in and contact a lawyer who practices there, you may be able to save your son the trouble of the trip.
He must go to court no matter how much time it takes him if he does not wish to simply pay the citation. Courts are not interested in your son's schedule as much as their own docket.