How often are you checking on them, and what have you provided for them to nest in?

I suspect if you know how many they started with, and know how many they have now, your bothering them too much.

They can be stressed by us hovering around, so my first advice to you is to leave them alone for the next few days. Make sure they have food, water, nesting material, and if you wanted, you can give them a clean plastic hut. They may or may not make use of it as a hide.