DD mostly sleeps in our bed still. We have separate duvets anyway so she sleeps in the middle and won't get suffocated. Anyway, she hates being under covers including her own little duvet or a sheet on its own. She always used to have a sleeping bag but she was really starting to hate it when the weather turned warm as she's a bit of a houdini. Summer has been easy, wasn't fussed about covers and she was happy but it's getting a bit cooler now so I'm not sure what to do. Can you still buy those big fleecy sleepsuits that go over pyjamas?