Start by respecting him and seeing him as a full person, not as a project. Don't think you are his sole saviour. Honestly, your comment sounds very belittling.
Don't force him into anything, respect his boundaries.
maybe you should be asking him how you can help him. talk to him, really LISTEN to him. Just be there for him instead of trying to fix him. And be willing to accept that it may not work out - don't push it because you want to "help".

And hope that he never reads what you posted here. If I were in his shoes, I'd think you were only doing this out of pity. I know you said you love him but an avoidant won't believe that. All he will see is that nowhere in your post, you've said You wanted to be with him.... Only that you want to help him. I'm sorry if that sounds like I'm nitpicking but that's the way our minds work. That is what you'll have to deal with if you get into a relationship with someone with AvPD.