My DD has napped well since she was 6 months. She is nearly 21 months now and up until recently had a nap between 1ish & 3ish in the afternoon. She is very busy so has always been tired for this nap. However for the past week or so she's not slept when I've put her down. She's just moaned & then cried until I got her back up. She's been tired for the rest of the afternoon & then shattered by bedtime. Is this the beginning of her starting to refuse naps or is there anything I can do to encourage/help her to continue this sleep? She goes down around 7pm and wakes around 8am most days. Any advice/ideas gratefully received!