They've decided to end the show this year and do a spinoff about Mandy and Georgie keeping only Missy and Meemaw.
Sheldon is insufferable, he can't act, he's not funny, he has no timing, he over-does it and he's ruined his own show. They couldn't fire him like in the olden days because it would "hurt his feelings," so they abruptly ended their #1 show to start over with a good cast.
Good move CBS.