J.C.
I personally think this just comes with the age. My daughter is 11 months and is in the transition of giving up a nap however she takes 2-3 a day not 1-2, in our case however, it varies from day to day; depending on when she woke up, how well she slept the night before, and what we are doing that day (playdates, classes, etc). I have found it best to just wing it woth her and when she shows signs of tiredness I put her down for a nap. Overall she is pushing her morning nap back later and then she will go down again between 2 and 4 depending on all factors. I don't allow her to nap later than 5:30 anymore as it makes for a difficult bed time.
I can totally relate to what Monica said too about the sleep training as we are currently getting our daughter to sleep through the night as well. She had been off and on for a while but with illnesses and colds it was more off than on and it had become the "norm" to be up once a night for a nursing and go right bac down, but we're weaning her off of that now. She actually went the entire night last night, thank goodness. I forgot what a difference an entire night of sleep can make.
Best of luck!!!