The other problem is that they are all different.... on the sleep front I can remember forcing my 2 year old to go to her room for a nap when I was in the late stages of pregnancy... both my girls didn't need a nap from just before they were 2, whereas my son could sleep for England... he used to have 4 hour naps sometimes and always had to be in bed by 7 where he would instantly fall asleep. It was a sad day when he outgrew that habit at about age 5, and he only stopped having naps when he went to school.
There are always new challenges as they grow older, I'm not sure whether its supposed to keep me younger or make me grow grey hair early.