This has to be his choice and if he makes the wrong one and spends 14 more months in jail, then it was his choice. I can only imagine how hard this must be for you, because that is the last choice we want our children to make, but you have done everything in your power to try and change his way of thinking and gave him all the help you could, and he's finding it easier to give up.
You don't have to cut off all contact with him, because there isn't many of us who would be able to do that. If he makes the wrong choice and stays in jail, then write him there and just let him know you love him, even though you don't always understand him and that you pray someday he can learn how to make better choices.
