Siblings by name…

[Mummanoodle]

I have 2 older half siblings. When I was younger we would spend time together frequently, but we never lived in the same household. There was a brief fall out between them and our dad when they were teenagers/young adults and we didn’t see each other for a while, but things were later patched up. As adults we have tried to build a good relationship and meet as and when we can (all live miles apart) but this seems to be a lot less again in recent years. One sibling hasn’t seen me for about 18m and hasn’t met my youngest child (6m). The other one has seen us once but did not acknowledge or respond to an invite to my DC’s birthday earlier this year nor send a card or text on their birthday. I feel really disappointed right now and don’t want to be the only one making an effort, but AIBU in my expectations given the history of our relationships?

I haven’t seen my half siblings for years. They are no closer to me than my next door neighbours.
Sounds like they’re just not interested

I get that some siblings, full/half/step, are not close and that’s fine. My issue is more that there is an ‘attempt’ to keep a rapport going but is it really worth it? I show interest in them and make a point of recognising special occasions, but don’t feel it’s reciprocated

I would continue with making an effort, some points in our lives we are busier and less time for others, other times you may really need and want contact with each other. They may feel uncomfortable around small children?
Could be many reasons but worth keeping a relationship even if fairly distant.

They may feel uncomfortable around small children?

They both have their own children, so this won’t be the case. One is always busy and doesn’t make time for our side of the family.