Darvin: Is there a way to prevent a prone character from attempting to get up? Doing so may cause an attack of opportunity, which is often fatal if I just used a healing effect to bring someone back from negative HP. I'd rather them just stay down until it's safe to get up, but at the start of their turn they try to get up automatically.

Jarmo: AFAIK there is nothing you can do. If they had made it possible to stay prone, that would have kind of suggested there needs to be a way to use a potion or do something while prone, and there's no animations for any of that.