Hi LauraHW - yep my boy, now 3, would only sleep for 30 minute cycles which of course meant he was grizzly and tired and we were tetchy and beside ourselves, then one day he slept for a 3 hour nap - who knows why as we'd already tried most things which had made no difference! I'm with Saffron, it was a stage that he grew out of. Good luck and keep strong, it does get better / easier! :)