I split from ex over New Years.
We have 3 kids 12,10 and 6 and he work full time while I work from home around the kids.
The children have sadly come to the conclusion that there Dad is an arse and are withdrawing from him.
Ds1 calls him Dickhead to his friends and thinks that his Dad is full of shit because he's broken lots of promises, contacts him by text sporadically and gaslighted him when ex was having an affair with ow. He's also annoyed that ex has gone from seeing him rarely to having to see him regularly. Ex does nothing with the kids bar chat, watch TV and text ow during contact. He arrives for contact at random times and will cancel last minute which annoys ds1 as he likes routine. He feels smothered and annoyed that ex throws money at him in an attempt to prove he's a good Dad. He loves his Dad but has asked me if I can reduce contact time because he sees it as pointless.
Dd used to text her Dad but his unreliability with replying has led her to stop texting as she's sick of waiting for replies that never come.
Ds2 is annoyed by being forced into having contact with a Dad who was previously never around much. Ex also refuses to feed ds2 food that he's not intolerant to. If he has the kids more than one day then ds2 ends up with diarreah, vomiting, stomach cramps etc despite dd and ds1 telling ex to check labels, order hot chocolate with soy milk etc. ex is taking the kids away for 5 days next week and Im dreading it on behalf on ds2 as he'll almost certainly end up ill.
Ex has been moody since the split despite him causing and initiating it so the kids walk on eggshells trying to gauge his mood. He can be in a good mood but is often physically in a room but not emotionally there which annoys the kids as they feel awkward and forced.
Should I be minimising their Dad's behaviour or continue letting them vent and withdraw from him? I am really sad for them that they realise that he is a crap Dad. I can't talk to ex about this stuff as he'll see it as an attack rather than an attempt to get him to be a Dad that his kids want to hang out with.