What does this mod do ?
In the Sims 4, toddlers have a 50% chance of having a nightmare at night ; this chance is divided by 5 for independent toddlers, and all toddlers have 10 times less nightmares than before once their thinking skill reaches 3.
My mod changes the base chance : one flavor reduces the nightmares to 20%, another to 10%, and the last one completely eliminates nightmares from the start. Flavors that still allow nightmares also allow independent toddlers and toddlers with high thinking skill to have less nightmares than others, as only the base chance to have nightmares has been changed.