Solved
Sim sleep taking all day
In my latest save file my Sim is taking a full day to sleep. As in, she could go to sleep at 7pm and sleep all the way through until 7pm the next day. That's how long it takes to fully refill her ene...
Weirdly it's fixed itself today. I disabled mods and created a new Sim in a new save and they slept just fine. So I re-enabled mods and they still slept fine. And now my original Sim also sleeps fine. She still gets tired quickly but I think that's from all the manual labour that comes with living off the grid!
