If you shared your story honestly there is no way you are a hypocrite. At least from my POV. But your brother may not see it that way though because if you are saying things he does not want to hear he may choose to blame the messenger instead of recognizing the truth.
I understand your desire to help your brother but you know it's an inside job. If he's not ready then he's not ready. There is nothing anyone can say to change him until he is ready. All you can do is offer your support and keep your side of the street clean so to speak. If you stay sober and lead an honorable life it is the most powerful message you can send to him.