I don't know the first thing about what would be involved with getting a formal contact agreement so don't know if it would be worth it in this situation and would appreciate any advice.
I split with my ex nearly 8 months ago now and we have a 4 year old dd. We weren't married if that's relevant.
At his suggestion the current contact arrangement is she stays at his overnight Monday, Thursday and Friday and then every other Sunday so I have her overnight Tuesday, Wednesday and Saturday and then every other Sunday. I agreed to this originally as at the time I just couldn't cope with the arguing anymore.
However I've realised that whilst on paper this arrangement is 50/50 it's not actually a fair division. In practice, I pick her up from school Tuesday, drop her off and pick her up both Wednesday and Thursday before dropping her off to him about half 5 on Thursday. I then have her back about the same time on Saturday and if it is his Sunday to have her I will drop her off to him about the same time again. Which means that every other week he has a Sunday where he is neither in work or looking after dd whereas I am either in work or looking after dd every single day. Don't get me wrong, I don't want to have dd for less time, I would just like the division to be fair and actually be able to do something on a weekend once in a while.
I therefore broached the subject of trying out alternating weekends for a bit instead and he said he can't do alternating weekends whilst COVID is about. When I asked why I was told 'I need help sorting her out from family and my mother is not available while there's no vaccine'.
Sorry it was so long. Basically I don't know if there is any point trying to make anything formal as technically it is currently 50/50. The fact he doesn't seem to think he can look after his own daughter on a weekend without another member of his family present is a different issue for another day I suppose.