Telling me he needs me more than ever now and the most support he can get.
Addicts must figure out how to conquer their addiction on their own. When they own the problem and solve the problem, they will recover. And not before. Telling them "what they need" does not help. They already know what they should be doing. And if they don't, a support group of people who have been there (AA, NA) - other recovering addicts - can provide direction.
When an addicts says things like "I need your help, I can't do it alone", the most helpful thing to say is "You are a smart guy. I know you are going to figure this out." and then focus on your life and your own recovery. Live by doing. Be a shining example of how to work a recovery program. Alanon is a good start. Good for you.