Eta. How old is he? Do you think using the cot as a deterrent for keeping him in bed could have created a bit of a habit? So now he's just expecting that that's just how a big bed sorta works now? Iykwim
Sorry, just saw this... No, I don't think that had anything to do with it. He's only been put in the cot a couple of times in the three months since we got the bed. And on both those occassions I only left him there for 10 mins before letting him sleep in the bed, on the condition that he didn't get out. Personally, I found this was the best way to teach him to stay in bed. A friend of mine has just put her twins into beds and was going through the whole in and out of bed thing. She tried a porta cot in their room the other day and has only had to put one of them in there once for them to learn that once they're in bed they stay in bed.