Sheldon decides to stop living "under his mother's thumb." This leads to humorous attempts at adulthood, such as applying for college at Caltech and attempting to navigate life without Mary's constant oversight.
In Season 1, Episode 18 of "Young Sheldon," titled "The Re-Entry Minimization," Sheldon deals with the aftermath of a recent argument with his family. As he tries to assert his independence, he discovers that being on his own isn't as easy as he thought. Meanwhile, Georgie and Missy try to capitalize on Sheldon's misfortune, and Mary tries to keep the peace in the household. young sheldon s01e18 dvd9