Hi, Katerina.
It sounds like you are almost there with no contact, but still letting him call the shots with not changing his address and your continuing worry about what will happen to him when the money runs out.
Please let go of this.
He has shown you who he is. He has no intention of pursuing recovery, despite the quacking.
Unhook yourself mentally from this person.
Give him a week to change his address, then send the stuff back.
He will continue to use you as long as you let him.
Sorry, hope this doesn’t sound too harsh.
I know how hard it is to watch an enmeshed, dysfunctional relationship play out, as my addict sib lives with my mother, and they are poster children for codependency.
as I am one of my mother’s caregivers, I cannot stay away completely, but I have very limited contact with them, for my own sanity and serenity.
I have had huge screaming matches with sib, which solves nothing and just makes me feel awful.
So I don’t anymore. There is no point. I just stay away.