Any Montessori mama's out there?

I recently just switched up my lo nursery to a floor bed and did a pretty decent overhaul on room aesthetic. Im wondering if any other mamas have a floor bed, if you use the crib mattress or a regular twin. Also, how long does it take for them to sense the boundaries and not fall off the mattress. What did you use for the sides, another blanket, a mat?? Something to soften the floor when they get out.

I must mention. He is crawling but when he wakes up hes a little disoriented from the different placement. We just did this 2 days ago so he doesnt quite have his wits about him to get up and crawl off the bed.