Let me make sure I understand the situation: You have physical custody
of you child and your ex gets supervised visitation. You have done your part to make the child available for this visitation, but your ex has made no efforts to see the child.
This can be very good for your case. Think about it: If I told you that the only way you could see your child was to have a therapist present, no matter how offended you were, you would do whatever it took to see your child. This is clearly not the case for your ex.
You keep doing what you are doing: Cooperate with any attempts to obey the court's order regarding visitation. If visitation doesn't take place, make sure it isn't because of you. As long as you aren't the problem, it will reflect badly on him.
And, of course, if you don't have an attorney, you need to re-think that. If your child's custody is at stake, there is no more important reason to have a professional on your side helping you get there.
Best of luck! If I helped, please click "accept." Thanks!