She'd previously had the run of the house, so we made the changes before bubba came so she wouldn't associate her limitations being caused by DS!
I was going to recommend the exact same thing. Admittedly our dogs are outside dogs I NEVER have DD on the ground when they are off as they both come from working lines and my Red Heeler nips (she was partially trained by her previous owner).

I think by getting onto it early and not allowing them access to the nursery is a wise decision. Also set up bouncers etc anything that the bub will go into/onto so that they get use to seeing them and lose interest in them. Have a water spray handy so they learn NOT to touch.

HTH

Nae x