Hello nice to have you with us.
A few things I will suggest, may or may not apply, but good "rules" when breeding mice.
1. always make sure there is plenty of water and food available, never let either one of those run out.
2. never touch the pinkies with human hands, leave them alone until they are older.
Other things to try....
remove the males, they will often kill babies so mom will be ready for more sex sooner.
put the cage in a low traffic area where there is not much human (or dog/cat) activity.
Other people may think of things I missed, and a photo of your housing setup will be helpful to us.