You could have the world itself try to make him do/not do things. Like
the city's edge in that "13th floor" movie.
You could have weird weather or day/night cicles like in the GTA games.
>(in the VR it seems only like a few months)So, is he dreaming? Drugged?
In any way, you could read about the medical aspects of being on any of the two for months.
>>1762I think he shouldn't accept them, that would make me think that he's in a dream.