If you have WSCB egg cases on your outside light, and they become smaller, does this mean they are moving inside?

I have 10+ egg cases on my outside deck light, and they seem to be getting smaller as time goes on. There is some daytime activity of WSCBs flying around the corners of my double glazed windows, but not necessarily around the doors.<br><br>If they are getting smaller, does this mean they are moving inside?