HI Tracey,

Dont know if any of these suggestions are of any use to you, but gonna put them out there and you can give them a try if you think they may be appropriate - given that i dont know all the story.

*As he has been back to your place, maybe needs to still be around, but not if you know what i mean...
can you leave some clothes/hygiene supplies out somewhere for him that he can grab - you say he only has one set of clothes, its obvious that he is not ready to come home, but by extending this gesture he knows that you are thinking of him - make sure thou it is not sending the message - here are you clothes get out thou.
*speak to families and kids that he may see, make sure that they know that you dont want them to dob or turn him in (even though you do) but so the channels of communication are there, maybe they will give you a call and let you know that he is OK kwim
* dont keep calling, give him a bit of space, but let him know that you need to know that he is OK, maybe you could send him a text asking that he let you know that he is OK...maybe he could send you a text every few days, no location etc but just that he is OK.

I know that none of these things are getting him home, but they might in the long run. As i said i dont know the full history, but by giving him the space, but letting him know that you are still there - it may help get him back through the door sooner.

I am so sorry, no parent ever needs to go through this (i am ashamed that i put my parents through this breifly) and you REALLY dont need this now. Make sure that you get yourself some help too, are you seeing someone for PND and grief and loss? Make sure that you make time for this, you are so imprtant and you need to make sure that you are strong enough to get up every day and help your tribe....

I hope that Jenjorga has some help for you