Ds2 is about to turn 6mo and he doesn't sleep unless I drive him around or walk for miles with the pushchair (took an hours walk to get him to nod off today). If it's in the car he will wake as soon as I get him out. At night either me or dh will be up until 1 or 2 trying to get him to sleep. This has happened in the last 2 weeks (before that people told us we were blessed as he usually slept 10-7 every night. Lack of sleep is driving us crazy and making us snap at each other. Any ideas would be appreciated!