Hi there, I was about to post a similar question...I am having to tweak naps in my almost 18 month old because if I let him sleep more than 2 hours in the day it seems to cause a seriously long nightwaking...like 2 hour night waking!!!! I am struggling to understand what his sleep needs really are between the NWs, teething etc...I think there was a link about it on the EASY board in FAQs, I will go and have a look....