Apologies - I only just now saw your post (it looks like it got caught in Itch's spam filter). It sounds like Lot 51's Core Library isn't properly enabled in your game - I use that to add brainpower regeneration to all EA sleep interactions, as well as a number of other things. You'll want to double-check that that's installed, and in a top level of your Sim's 4 mod folder. If you've already done that, definitely double-check to make sure that script mods are enabled.