Have 3.2yr old DD and 14 month DS - they have been sharing a bedroom well until about a month ago and bedtime was fine. Both usually asleep without fuss by 7.30pm.
About a month ago DD stopped going to bed nicely - lots of running around, shouting and generally keeping DS awake. (DS also earlier riser from 6am so was waking her early as well)
So we have split them up which is working better in the morning and DS is asleep by 7.15 usually.
But DD is still driving us crazy at bedtime. Have tried to get her to go up later but she always wants to go up at the same time as DS. Usually nice as pie getting teeth brushed, PJs on and story read. And then the fun begins - we have 1 - 2 hours of her in and out of bed, shouting for us over covers falling off, a drink etc. , running around upstairs, opening and shutting doors.
Not really sure how to resolve this, we usually get 1 or 2 nights a week when it works fine (probably lack of sleep catching up with her). We have pretty active days so don't think I can wear her out much more. And she's off to pre-school in Sept so i think this might solve the problem! But it's sooo stressful can't wait until then to get it sorted - any suggestions?