Kind of a WWYD...
DD (4) has always been a pretty good sleeper. However, recently she has started playing/reading in her room after I've said goodnight. I'll leave her at about 7.30 and all will be quiet, then I'll pop back an hour later to find her sitting up in bed, with her light on, surrounded by toys, chatting away to herself! I'm not sure whether I should be trying to enforce "sleep-time", but tbh I haven't got the energy at the moment as I have a non-sleeping baby to manage too and it's just me in the evenings. Are anyone else's DCs similar?