Hi Suprarl
Sadly like Motye51 says there's not much you can do. Maybe just be there when he reaches out for help(real help not money). I had a close family member that was on crystal and she was near impossible to deal with. She did manage to get clean though and is now leading a productive life.
There's no reasoning or in fact even discussing things with meth users when they're high. Its a really horrible drug.
There's not much you can do unfortunatly....he's not going to go until he's ready to go. Kind of odd....I live in Louisiana....my brother lives in Napa Valley, in CA....we only hear from him when's he REALLY, REALLY loaded, usually at 3:00 a.m. and it's to tell us what big pieces of **** we are! Nothing I say to him ever get's through, he throws it right back in my face. I've resigned myself to the fact that until HE get's enough of it...not going to get any better. I do say STOP taking his calls!