Should I try to get my friend some help?

My friend has skipped an entire week of school to go drink and smoke pot. He's gotten arrested a few times. He's gotten drunk and stoned on a cruise, and his parents found him muttering gibberish. He's spent $1000 from what he saved up when he was a paper boy, and smoked it all in one month (about 7 grams a day). He's been kicked out of a local mall for smoking in their bathrooms. He's said he was quitting smoking many times, but always went back to it. He's 17, I'm 18. I can't really keep an eye on him so he doesn't fuck up too much since I don't hang out with him enough. Should I recommend him getting professional help?

>>7
Because he's a really good person. He never judges anyone, never makes fun of others, he's funny, he's smart when he's not high, and he's one of the very few friends I have. Plus, he's a jock/nerd/religious guy hybrid, which is pretty cool. He just has a problem with addiction.
>>8
I'm not going to tell him to stop flat out, since he seems to be having the best time of his life, and he's not going to be able to do this when he's older. I don't mind him having the amazing fun he has doing the drugs, but when he skips school, that's when I want him to settle down a bit.