I am officially in nap hell. My 19 month old DS has never been a great napper (although his nighttime sleep is good) and dropped to one nap at 12 months. He has now started to fight his nap and some days will go without one.
On the days he goes without it doesn't seem to affect his behaviour too much he is definitely slightly grouchier but nothing major.
When he does have a nap he then won't go to sleep at night til 8.30/9pm when he used to be asleep by 7/7.30.
Does this sound like he is dropping his nap??
I honestly thought naps would continue until he was closer to 3!
My 20 month old is doing a similar thing. I don't think she is ready to drop her nap yet, but I am trying to bring it forward so that she is more tired at bedtime. Ideally I'd like her to sleep 11.30-12.30, as if she sleeps later then bedtime is hellish around 9pm.
I think if I tried to stop it now, she'd fall asleep on the way back from school run at 3-3.30pm, which would make things worse.