Hey man your bro used to post on here right? If I remember correctly he & I were friends on Myspace back n the day too.
No disrespect intended to you, your brother or your family but:
A muh fucker gotta grow up at some point. When you got not just 1 but FOUR kids & you are still tootin shit up your nose & drinking liquor like a fish, there has to be a line drawn somewhere. Believe it or not it is up to you, your family, & his loved ones to actually draw that line & put a boundary in place otherwise you are gonna lose your brother, straight up.
I only speak from experience breh, & I want your brother to do well, but it is really up to YOU and his loved ones at this point to take action or you guys are going to lose him to his addiction & you will hold onto a shitload of guilt that will change your life.
He will, in the process, remind you of your downfalls, but this isnt about you, it is about getting him better & holding onto someone you love.
Best of luck to you breh, for real.