Marcellus - good point re the sides of the cot. I already have a single mattress on the floor at the end of the bed, in case he falls off the bed. Perhaps he could start sleeping on that. Now that I think of it, I might try that - then I can lie with him during the night to resettle, and then get back in our bed - brilliant!

Heather - I would definitely suspect ear infection, as he tugs at his ears a lot. But he saw his GP about a week ago and his ears were fine.

Traveller - interesting, maybe he is just a restless sleeper, but am still keeping my fingeres crossed that it resolves itself soon.

Thanks for the replies everyone
xx