Sims napping instead of sleeping, even at night.

My sims will default to napping when they have low/no energy instead of sleeping. Some. yes, will use their assigned bed but will default to napping, even at night. I saw someone mention this 11 years ago, that they will nap during the day and sleep at night, yet it's still an issue? It's not just one household, but literally every sim. It's annoying having to constantly make sure they are being "realistic" in their energy levels and having to change them from napping to sleeping.