DS is normally a good sleeper, however tonight and a couple of weeks ago we've had hours of being wide awake in the middle of the night. His language is exploding at the moment, and his understanding is really coming on, is it another developmental leap or should we be 'doing' something? God knows what-he's self settled since he was a newborn and totally point blank refuses to sleep in our bed with us. He's currently in his cot, whinging and sporadically calling out 'mummy'...