My ex-husband has very liberal visitation according to our divorce stipulation. He is entitled to every Wed. from 6pm to drop off at school the following morning. He is also entitled to every other weekend from Thursday at 6pm to Monday morning drop-off at school. He only takes him every Wed. from 5-8 pm and usually for a one night sleepovers 2 times per month on average. Then he is dropping him back of at home the next day. I cannot get him to follow a regular weekend schedule. I cannot plan anything in my life because of this sporadic visitation. I cannot speak to him about any concerns of mine because he yells obsceneties at me and hangs up on me all the time. I speak to him through text messages. Can I go back to court and change his visitation based on his lack of wanting or exercising it? This may make him adhere to his visitation if he thinks he may lose it. I'm tired of being controlled by his visitation at his convenience.