Am I overthinking about how they treat my autistic son?

I don't think my son's father or his family care about us. I have been separated from his father for a while now, and I've come to realize that neither his father nor his family makes an effort to check in on us. My mother passed away three years ago, and she was my only support system we had.

My ex and his family live in the United States while I live in Canada. Days and weeks can pass without any communication from them. When I bring this up, they either change the subject or shift the blame onto me. I confronted his brother about their lack of outreach and how they always expect me to be the one to call or text them, but he just ignored what I said.

The frustrating part is that they know we don't have anyone else here. The only time they seem interested in my son is when we visit them. It feels like they only acknowledge him when we are in the same country.

Updates
1 y
I also forgot to mention that his brother shows his niece more attention than my son even posts her on social media but not my son
Am I overthinking about how they treat my autistic son?
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