Ex moved out a year ago. We have 2 boys, DS1 who is 6 and DS2 is 3.
For context, he has them on average one night a week, I do all of the school/preschool runs, sick days, isolation periods. Largely this is down to his shift patterns, he works in the transport industry, but part of it is due to him not making as much effort as he could.
We were notified this morning that preschool will be closed all next week due to covid and staffing issues. I work from home but it's difficult with a 3 year old around, I don't get as much done as I should, my boss and team are understanding but even so. Especially as DS2 was also off preschool for 3 days last week with a sickness bug which I also had to work around. Ex told me that he is off work Monday and Tuesday so I asked him to look after DS2 on the Tuesday. He has said no because he "already has plans" which involve housework and shopping and "everything else I don't get time to do while I'm working because I'm so tired".
I told him it was his responsibility as he wanted to fob DS2 to his parents and he messaged me all dramatically saying if he crashes a vehicle cos he's too tired then he will kill people and he needs his rest days. But then he also often tells me that he goes to see his mates during the week and stays out too late and is tired the next day.
I'm sick of his dramatics but how can I argue when he says things like he needs rest otherwise he will have to quit his job or he will end up killing people! I have asked him to look after DS2 for one day, on his day off, I haven't asked him to take a day off work because I know he won't do that. I really don't think I'm being unreasonable, AIBU??