FearLess Cheat Engine

How do i make the permanent cheats, well permanent, like loading save and such wont undo it

QUESTION
IS there a way or script or anything to make it so i can turn my character into an illithid early, they dont want to use tadpols so i played until they were willing, but they will only go half illithid, the full transform wont trigger no matter what i do, can anyone help?

Hey so just wondering if it would be possible to make it so my beginning character can become an illithid because spawning in the larva lets me become half but wont let me be full and i wanna do an only illithid playthrough