Can Adderall abuse be tamed?

I recently got in a heated argument with a friend of mine about this. He's in his late 40's and has been prescribed 90 30mg instant release (supposed to take 3 per day 1 at a time) Adderall for close to 10 years now. Problem is he's grown a tolerance to it I guess. He quite often takes 2 at a time for his first dose of the morning and then ends up taking 1 at a time 2 or 3 more times that day. He's averaging 4 or 5 a day which is causing him to run out a week to week and a half early each month. During that time he's irritable, extremely dragging arse, just very unpleasant to be around. That's what sparked the argument. He's very defensive about the pills and it's to the point that I just stay away from him for the last week. I told him he's pretty much fricked if he doesn't get control of this situation but he's convinced himself is ok because it's legally prescribed to him. God forbid I tell him anybody can get a RX for it these days. The dude's become a pussy. He can't cope with anything until he pops an Adderall. A bird could shite on his truck and he'd need to pop an Adderall to clean it off.

I know his case isn't rare, especially with the instant release. Is there any regaining control at this point? Have you known anyone to go back to taking it as prescribed once they start abusing it or is his only option at this point getting off of it or talking to his Dr about an alternative? I've never tried one but I've tried coke back in college and if it's anything like that then I can see why it's easy to abuse it. We've been friends for around 25 years now and shite has changed him drastically.