I found with my DD who is also one, that when I gave her 1 nap instead of 2, she went to sleep at night earlier. So around 8am wake up, 1pm Nap till around 3pm, then I put her to sleep at 8pm, this has worked for awhile now. when she had 2 naps though, she wouldnt want to sleep that early, she would go to bed different times. So I reckon maybe cut down one nap. Good Luck