I do feel for you! We have a landing at the front door that has two steps up. When I first got the babies, they would climb the two stairs and start crying. I thought I would go crazy running from all over the house to rescue them constantly. We have an upstairs too, they finally got the hang of the whole stair thing, now I just fear the big fall down the stairs trying not to step on them when they stop short right in front of me.
