I believe you can do it with a cheat.
Sims 3 age down cheat. Here are the steps to using the cheat to age down in sims 4! It is extremely simple to operate the sims 3 cheat codes. First, open the cheat console by holding control+shift+c.
Fulleditmode” cheat code to open the menu of cas. It's a meal made out of a life fruit and a death fish. Note, you can only do this with regular sims and ghosts.
But if you just want a younger version of your sim, you could save them to your sim bin. Command + shift + c console: Allow cheating with “testingcheats true”.
Activate the sims 3 cheats on pc: Activating the age up cheat open up the cheat console by pressing ctrl + shift + c on pc or by holding down all four shoulder buttons on your gaming console controller. To use cheats in the sims 4 hold down ctrl+shift+c for windows or command (⌘)+shift+c for mac at the same time and a small bar will appear at the top left hand corner of the screen.
Write the “cas.fulleditmode” cheat code to enter the cas menu. Ctrl + shift + c mac: How to cheat skills in sims 3?
This is fully customizable from the options menu. Only after writing these novels will your sims be affected by this increased skills cheat. Type in testingcheatsenabled true without the .