I have a duck who keeps prolapsing and I’m trying to make her stop laying eggs so I’m putting her in a big dog crate in a dark room at 4 PM every day and not letting her out until 8 AM. That’s 16 hours of darkness so far she still laying eggs, but it’s only been two days I wonder is that the right amount of hours, can I do less than that? and how many days should it take for her to stop laying?