Please help. my ds has never gone from standing to lying down ever. He's nearly 13 months and is waking up about three times a night now (used to sleep through). We have tried to leave him and he's actually shouted stood up for 1.5 hours before we've gone in and stoked his head to sleep. Even playing in the day I can't get him to go from any sort of sitting/standing to a lying down position. What can we do - do we just have to wait it out till he's older and he learns he has to be horizontal to sleep!?