I just got done making a nest box for Lola, but I think I might have made it to small.... How much bigger then her should I have made it? I did not want her to be able to lay in it so that she just feeds them and moves on so to speak. She has not had any kits yet, not due till the 5th. I made it since she was trying to make a nest out of her hay ration this morning. It looks a little tight to me. Any pointers?