lol im an idiot for forgetting that
I think you are just story blocked you are behind in your Ziva quests. Do enhanced Fertility and I'm guessing it will open out more
and I recommend doing intervention, some of the best scenes are there IMO.
How do you have enhanced fertility potions, yet haven't done the enhanced fertility quest? is that something the inbuilt cheat gives you?
Moving Goblin daughter quests forward might help too.
Edit 2:
This game has a lot going on that can be done when you like, but to be honest I nothing is jumping out at me as a reason why Erevi is sleeping, you've not gone crazy with save editor, so I'm sticking with my guess that a story choke point is slowing you down.