I have two daughters and although they had no cousins for a few years, they now have two cousins born from my brother and DHs brother just weeks apart.
Everything was great at first but I knew that eventually, my nephew would become my Dad's main focus. Hes now almost 2. He was evidently disappointed on learning I'd had another girl when my second daughter was born and had been "sure" she was going to be a boy. He now visits my nephew every single weekend and my girls around every 3 weeks. I keep inviting him along to their performances and days out with us but he declines and often says "sorry I'm seeing grandson that day" even if he has recently seen him and not seen my girls for a while.
I don't have a great relationship with him anyway as he always made much more time for my brother than myself over the years so part of me thinks its no loss. But I feel for my girls who have clearly become second best. My mum doesn't treat them like this thankfully and her and Dad are separated.
MIL having had 2 boys who she adores and a daughter that she sees as more of a nuisance, longed for grandsons too. Prior to her grandson being born almost 2 years ago, she would always bring little pocket money toys and clothes for my girls, but it's now her grandson that she buys things for, telling my girls "you have enough clothes and stuff." She also keeps telling everybody, including my daughters that shes "grandsons favourite." It's the other way around. FIL is not like this at all and treats them all the same.
MIL is DHs problem, I keep a distance because I think she's slightly inhinged, but my Dad is my problem.
I don't enjoy his company anyway, he's draining to be around but I always kept a relationship with him for the sake of my kids. Now wondering, why bother?
I hate that this sort of thing happens in families but it clearly does. My brother seems proud that my nephew is clearly favourited by our Dad so there's no speaking to him about this. It's also driving a wedge between me and him.
How do people manage these situations? I can see it just getting worse.