This guide will let you know how to add the Unhappy Infant reward trait in The Sims 4 (Growing Together). You can do it quickly by using a cheat.
You will need to press Control+Shift+C on your keyboard to enable cheats, input “testingcheats true” and strike Enter on your keyboard. Now to add the Unhappy Infant reward trait, input “Traits.equip_trait Infant_Unhappy” and press Enter.
To remove this trait, you need to input “Traits.remove_trait Infant_Unhappy”
