So once I could drive myself around I took matters into my own hands. I would randomly invite my aunts to lunch or text my cousins and try to get to know them that way. This was really hard for me, because I'm awful at small talk and I hate texting! Everyone was always surprised when I reached out to them, which is crazy to me, because reaching out to family shouldn't be surprising. This went on for a few years with mainly me continuing to reach out, but the conversations got better and I really got to know my family.
I highly suggest trying to get to know your family members!
We often times let our busy lives get in the way of some really important relationships.