I am divorced from DCs father. We have a 50/50 shared parenting order in place. He is difficult to communicate with and unreasonable. Couple of recent examples include my asking him if he would like to take care of DCs for an extra night when I had to be away for work. He asked what the "terms and conditions" were. I replied asking for just a yes or no (I had no terms and conditions - I was simply asking the children's father if he would like an extra night with them!!). So he declined because I was not prepared to engage in a discussion about it. Second example being DD needs dental treatment. The next available appointment at the dentist happened to be on his time in the Christmas holidays. He won't allow me to take her to an appointment on his time (he would have to organise time off work, whereas I work locally to DD's school and dentist so could juggle my hours to accommodate appointment). The next available appointment on my time is during school hours so I have to remove her from school.
He has delusional beliefs about me that aren't true - that's why we're not together anymore - and this makes any negotiating/discussing/communicating with him extremely hard work. The exchange of messages over the dental treatment were confusing, had me going back and forth to the dentist and waiting for him to respond, and resulting in DD losing school time. She is only 5 and has a little brother who's 3. If it's still this difficult sharing the parenting with him after 2 years when they're this young, I can't imagine what nightmares lie ahead as they grow up, become more exposed to risk, join more clubs, etc... I'm wondering if it would be better for them to be with one parent during the school week and we alternate weekends. We both work full time, but my work is local whereas his is a 30-45 minute journey up the motorway.
Would I have a case to ask for a change to the parenting arrangements and if so, what would the costs and time frames be?