How does HE feel when he doesn't take his medications? My difficult child hated the idea of not taking his medications, from age 7 when he started. He could think and focus, and he liked that.
I know for years medication vacations were prescribed because there was concern about growth issues. but research has shown that this is not needed except in very rare cases.
What will it do to your family life if he is unmedicated on the weekends? Will you be able to enjoy him? to have a better family life? I know many families that HATE having the child unmedicated on weekends because it destroys any chance of positive family time. but I am sure there are families that are the other way too.
I don't know much about vyvanse, but I know iwth ritalin and adderall the psychiatrists always left it up to us - though they said if difficult child was in sports or other activities that happened on weekends it might make them much harder and much less positive experiences.
Just my .02
susie