An update. We had mostly up days with one more down day yesterday, but at least it ended well. J is leaving school today. (he works full time and goes to school full time. He has done this since 2010)
The decision to withdraw from school is his alone. I listened, validated his feelings and let him set his own course. He did say that "We'll have to start paying on my student loans now" which there's no way he can pay on his own.
I am still reading DR and taking reassurances in the two case studies presented there, and other excerpts. I have also read "I Love You But I Am Not In Love With You" by Andrew G. Marshall, and "This Is Not The Story You Think It Is" by Laura Munson. "ILYB" has given me a great deal of insight into my own behaviors that need to change, and I am working toward that, and a better ability to forgive in IC while giving J the time and distance he needs. (no matter how much I cry after I go to bed at night.)