DS (just 3) is getting v tricky about going to bed - endless getting up, demands for water, different bedding; dismantles his duvet, bed, bookshelf - it's often an hour of increasingly bad-tempered chaos. He doesn't always come out of his room, just works away quietly taking things apart. Any ideas about ways of persuading him this is a bad idea? I don't think he's getting enough sleep (8ish till 6ish, no nap) and he's often overwrought and bad-tempered. Scope for total focus on his bedtime routine is a bit limited, as other DS/DD need attention too. He doesn't seem to 'get' charts yet (he's had them in the past, more because the others have).