Hi, Lori. Welcome. Just check occasionally to make sure the next isn’t soaked, like Carol mentioned. That’s all you need to do. If you find that your box keeps getting rain water in it then you’d need to modify it some how but for now just check on it after heavy storms or blowing rain. Of course make sure the hole points away from prevailing winds which I’m sure you’ve already done. Congrats on your eggs.
Tammy