How do I do this?

My fiancé (ex) and I have recently broke about it’s been an almost two months we were together for about 6.5 years. A lot has happened in the 6 weeks of being broken up. Him and I both made some mistakes, emotions are high and we’re exhausted. I wanted to go to couples counseling and try things to get us on the same page. We went to two sessions and he refuses to go to anymore, he refuses to implement any of the practices and continues to say I’m still upset about things you (me) did. I get it and that’s his right to feel like that, but I did tell him I would want to work towards a path of reconciliation and he doesn’t seem interested (at this point). I have never seen my life without him and now I have to. I’m struggling with the fact I won’t see my son every day it tears me up, I’m scared of what’s going to become of us. I just don’t know how to move on. Any suggestions for a new mom + being single and having a big breakup. Going through a lot right now