I'm fostering a mamma rabbit and her five newborn babies for the shelter. They are so tiny! The mom has already made a mess of the condo and spilled pellets and hay on the ground so I'm going to make a choroplast bottom for it, how high should I make the sides? The babies shouldn't start leaving the nestbox until they are 2-3 weeks old, but I don't know how small they will be or if they might be able to squeeze out of the holes. I think the choroplast will provide some protection if the sides are high enough.