Update on the Other Half of My Bio-Family

It's been....interesting trying to process this intrusion of sorts on my psyche. To bring you up to speed and understanding, here's the cast of players:

Bio-Dad - died in 2005 from alcoholism. He was about 58 years old if I did the math right. No other kids. One other ex-wife.

Uncle T - died in 2005 8 months after bio-Dad from alcoholism. No kids?

Uncle B - He's the one who called me back in the spring of 2017 at work and exploded my world. No kids, not married.

Uncle J - His wife Aunt L is the one who searched for me and my brother and she found our info. They have one son who has 2 kids about the same ages as mine.  

I finally screwed up the courage to call Aunt L, because Uncle B gave me her cell phone number. She was over the moon excited to hear me and we had a pretty good conversation. Pretty good for me learning that my Uncle J is now battling a life threatening heart disease for which there's no treatment and it's only a matter of time. He's somewhere between 65-70 years old? I also learned that there's more extended family members on that side who have died from alcoholism. 

Do you know what this does? I literally was found, and now am actively losing family. If I don't get out to visit Aunt L and Uncle J, I'll probably never get a real account of the family. Out of the brothers, Uncle J is the one who managed to have a career and a family and not succumb to the disease that apparently rampages through that bloodline. I'm not ready. I was barely ready to call her, and now I feel like the clock is ticking and if Uncle J dies before I travel, I'll regret not meeting him. While I'll probably keep in some kind of contact with Aunt L, it won't be the same. He's my chance to get a first hand account of what it was like growing up in that family and what he did to avoid going down the same path as his brothers.

I can't process. I keep pushing it away.