Hey @shuta,
We are glad you understand the rudiments of what we are saying about Schizophrenia.

As for your relative, you don't convince him coz he's not amenable to reason. Well, unless, you take time to find that special thing that can move him even in his state.

Besides that, you guys should find a way to bring him to the nearest psychiatric hospital. There's no easy way to do this. In the appropraite hospital, they know how to manage them and make them do things.

Cheers!