The chapter may have closed on season 3 of Shrinking, but several stars from the series are already envisioning what their characters' futures might be. Warning: Spoilers for the Shrinking season 3 finale below. After Shrinking premiered in 2023 with grieving therapist Jimmy (Jason Segel) rapidly approaching rock bottom in the wake of his wife's death, season 3 saw his lovable band of friends and family adjusting to their new normal - and ready to expand.