At my wits end with 6 month old DS who won't nap during the day unless we're in the car or out in the buggy (and even then he wakes if the buggy stops). The only way I can get him to nap is to nap with him and even then it's a stuggle. Should I persevere with trying or just leave it? Today he got SO overtired and tetchy and I'm getting tectchy and bad tempered back because I feel like I don't have a minute to myself, ever. I've tried the usual things like routine, putting him down before he is tired but nothing seems to work. Should I try sleep training?