When does Big City Greens return?

Big City Greens is an American animated sitcom that premiered on Disney Channel on June 18, 2018. The series follows the Green family as they navigate life in the bustling, fictional Big City after moving from their countryside home. It features the voices of co-creator Chris Houghton, Marieve Herington, Bob Joles, Artemis Pebdani, Zeno Robinson, Wendi McLendon-Covey. A spin-off series is in development.
After losing his farm in the country town of Smalton, Bill Green and his two children Cricket and Tilly move in with his mother Alice Green (Gramma), who lives on a small farm in a city known as "Big City" By the second half of season three, Bill moves his family back to the small town after regaining his farm.