Get crib pack n play swing etc set up now asap so they can start learning to stay off those things spray them with water and keep aluminum foil in there to scare them off of it when ur not around. Ive also heard of ppl getting a baby doll and treating just like a real baby to get animals used to lo but idk about that cuz obviously a real baby is going to make sounds move and smell way different than a plastic doll but something to try.
Just set boundries early i got some cat deturent and sprayed it around the feet of baby items my cat now leaves them alone. I even got her a cat tree so she doesn't feel left out
I've been worrying about this too! Same situation. Two cats that rule the roost, first baby on the way.