Michelle, his whole life has been a period of not sleeping through! He slept through twice at 1w old (8 hours and tube-fed), a few times at 4m old (6-7h a time), but the last 5 months have been every 2 hours or so, every 3-4 on a good night. He's not hungry, hot, cold... just crying cos he's tired. Stay asleep then, daft lad!