Hi Laura,
I don't know if bringing him food is the right thing or not but, I would do exactly the same thing. I have a 19 yr old A/D who just called me to take her to a hospital, says she doesn't want to do drugs anymore(lol).
In any case I know I shouldn't but, I am going to pick her up and take her to a hospital. I know I am a classic enabler and I really am trying to work on it.
As a mother I can definitely identify with how you are feeling. It is so hard when it is your kid.
Prayers for you and your son,
Sickatheart