So, me ex took me to court in 2016 for an access order. It was all sorted and the order was what he was getting anyway (waste of my money paying a solicitor ha ha). In October 2018 he advised that his existing employer was changing the shift pattern to a 4 on 4 off system and that the access would need to change. I asked my solicitor if we needed to go back to court to change the order and he advised that we could make a private written agreement. Well, I have received the very hap hazard access request which basically does not have any routine at all. Some dates requested are though the school week on days that we have existing family commitments and sports activities which I pay for and also participate in. On this basis I have denied these dates, 14 over the year. He wants me to change them as I am "sacrificing" his time with his son. Bearing in mind that my son is in his 4th school year and his father has never had him overnight as I believe that the child needs a routine especially during school time. So, I have tried to negotiate some of the dates as mentioned above but I am basically being told no and in summary he will take me to court.
I am more than happy to go to court but my question is:-
Should I seek advice from mediation
or
Should I seek advice from my solicitor