Ds used to be so good at going to sleep (not staying asleep though!) we would put him in his cot and that was that. He has just had a really bad few weeks with teething and four teeth came through together. SInce then going to bed has become a battle, as soon as we leave the room he sits or stands in his cot and cries so hard. This goes on and on, with me going in and him settling then me leaving and straight back to screaming. I have got into the routine of patting his back until he sleeps, which I know is a bad habit to get into, but don't know what else to do. Any advice?