Another mom here. The more you practice the no contact, the easier it gets. I had spent all of my time worrying about my daughter, that I didn't know how to live without that. It took practice to find my new normal - focusing on someone other than my daughter. It didn't mean I didn't care, it just meant there were other things that needed my attention (husband, other kids, and ME) lol I know my daughter knows deep down how much I love her; that's just not on her radar right now. Just wait for the phone call from your son, see the caller ID, and be ready to use your tools you have learned. I promise it does get easier.