Help,! First time mom here lol

Jasmin
Hey ladies, so I'm a first time mommy currently 30weeks pregnant. I've been preparing as much as I can for the baby. So far I have stored everything in the garage and my parents are saying I'm taking to much space lol.. So my main question is how soon can/should I prepare the baby's room (crib,swing, closet,changing table) I think it's still too soon. But everyone keeps telling me to start setting up. But wouldn't it get all dusty and dirty making me have to rewash certain items? How soon did you other mommies prepare your baby's room? Please help !& thanks for reading :)