Happy birthday to your little one!!<br><br>
I had this issue for a while around that age, too. I ended up just putting pillows on the edges of the bed. I don't know if that would have made a big difference or not, but I figured he wouldn't role right over them. I supposed he could have nudged them off the bed, but he doesn't move around much during his naps. I also used a monitor so that if he did sound particulary mobile, I went in there and checked on him.<br><br>
I doubt anyone would actually recommend this, though. It's not foolproof. He never did fall off.<br><br>
You might want to just pick up some guardrails, if you're concerned about it.<br><br>
Hope that helps.