Since the clocks went back (forward?, I can't remember) in October, Abbie's been taking 2 hours or more long naps in the afternoon, extending way beyond her previous 1 hourish nap times. I thought that the darker, colder days, and perhaps an intense period of development, meant that she needed the sleep to lay down whatever new things she's learning, so didn't interfere. Not to mention that getting that much time to myself in the day was pretty amazing (especially given I was in first trimester big fatigue state at the time). Unfortunately, this had a knock on effect of her playing up at bed time, alot of the excuses were to do with nappies, needing a drink, anything really to get some attention away from the fact that she should be in bed! Our evenings went from dinner, bath, bed by 6.30pm and evenings to ourselves, to dinner, bath, and bed, but no actual sleeping until anytime between 7 and 10pm (with lots of trips up and down the stairs in the meantime, eating separate evening meals, just like old times). After a few months of this and lots of trial and error, we have finally worked out and fixed things. RELIEF. Thought this may be useful.