Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
For clarity they swapped weekends for the convenience of each of them and now the father wants to stick to the proper pattern and your daughter would prefer to reset it is that correct?
Where is the child now?
So he is back with his mum?
I am afraid that there is no basis on which her ex will ever be flexible so your daughter did well to ensure that she had her son for the wedding and she should leave it at that.
If her ex asks for a change then she needs to workout if it works for her and the child and answer accordingly
Apart from that she should stick to the settled pattern - I appreciate that this is not what you wish to hear and of course your daughter could simply keep her child this weekend - there is little that the court would do other than give your daughter a stern warning - but frankly this is not something your daughter would like and it is pointless to play into his hands
Please ask if you need further details
i am so very sorry but this man will not change his ways.
He cannot take over her life unless she lets him
I know - but if she stays calm and simply works around the contact times she will win