Don't give up on your brother dude. You don't ever do that. But also can't help fix what someone else refuses to call broken. Sure he has to be with a regular PO or counseling after 12 yrs? Does he know himself sober? You can watch someone fresh off time away and new opportunity fall right back into routine of a chemical crutch..you get equally pissed and exhausted trying to keep their head above water. You urge and encourage the best for family and remind and hold the best of times..if anything else you and your bro get to keep that. Hang in bud.