My husband works shifts and always has done. This can change week to week and it was agreed with his ex when they separated that he would let her know as soon as he had his timetable so they could plan the days he has their two DC. This happens a month in advance typically, sometimes a little more.
Now...I appreciate as someone who also shares a child with him that it can be frustrating month to month. His ex has decided she wants set days now going forward which obviously DH cannot agree to as he'll at some point be working on those days.
She has suggested we sort it out "as a family" I.e. I look after the DC when DH is working.
Aibu to say no I won't be getting involved? This arrangement was the official child contact arrangement set when they divorced years ago and she like me decided to have children with a shift worker so its just tough luck really? 🤷♀️