Does he attempt to make up for this by giving you a decent break at weekends?
My exH moved out last weekend, we have 2 DC (4 and almost 2).
The younger DC has never slept through, and is usually up around 4 times in the night (was about 8 times last night). I work 4.5 days a week in a full-on job. So, I am absolutely shattered doing all night wakings, childminder and nursery run (oldest has just started school), doing all cooking for them, and most bath/bedtimes (ex came round in the evening for last 2 nights).
Ex agreed a few days ago that he would take kids on Sat morning as he is playing football in the afternoon and may be working tomorrow (so is only time he will see them all weekend). When I asked him about it last night, this changed to "I'll see if I can make it" so I have no idea if he will or not. He has been off work most of the week, and has spent about 4 hours total with the kids. I have had a frantic week at work and am getting no break all weekend. Also, he works shifts so this is one of the few weekend days he has off in the next few weeks.
I know it's going to be different now we're not together, but their still his kids too - why does he get to pick and choose when it's convenient to see them, when I have no choice and have to just put up with his rubbish-ness.
He seems to be trying to punish me for us splitting up, as once when we argued I said I could manage without him - he has brought this up whenever I ask him to help with something, even when he was still living here (can you see why he's ex?!)
Sorry, I'm rambling - I just don't really know how I'm going to cope as I don't have any family nearby, few friends (only really 1 who I could ask to help occasionally). I hate thinking about my kids in terms of how much work they are, but it's hard to enjoy them when I am never going to get a break.