https://screenrant.com/georgie-and-mandys-first-marriage-episode-10-sheldon-roommate-agreement-remembered-explainer/

While Young Sheldon's title character hasn't appeared in the spinoff yet, Georgie & Mandy’s First Marriage (https://screenrant.com/db/tv-show/georgie-mandy-s-first-marriage/) episode 10 proves he is still vital.