Hi there
My LB is 21months old, but he is really very big. He wants to climb out of his cot and bounces up and down, which makes me a bit nervous as I'm scared that he falls out of the cot or his foot goes through the bottom planks of the cot, so that is why I decided to take this step this weekend.
You know, that pillow under the mattress is a very good idea, I didn't even think about it. Just shows its good to ask for advice even if you think you know it all because its your second child

We didn't have any problems with my LG when she went from cot to bed, she never fell off once... and I also didn't have those railings.
But I think I should go and get it for him as soon as possible, it seems our journey from cot to bed is going to be a bit different the second time around.

Thanks for the good advise I will let you know how it went tonight.