Warning! Spoilers ahead for Young Sheldon season 6.CBS sneaks a secret detail in Young Sheldon season 6 which reveals that Sheldon's dad's death is close. The Big Bang Theory revealed a good deal of information about the Coopers' life in Texas via Sheldon's childhood stories. So, while George Cooper never got to appear in the nerd-centric sitcom, certain details about his life were already established before Lance Barber debuted as the character in the CBS prequel comedy. Those details include that of his death, which Young Sheldon season 6 revealed to be inching very near.
https://screenrant.com/young-sheldon-season-6-1993-detail-george-death-close/