DD1 went down to one nap a day around 14 or 15 months, nap was generally about 3 hours and she slept about 10.5/11 hours at night with 1 to 2 wake ups. DD2 will be 18 months this month and clocks about 4 to 5 hours worth of naps during the day (2 naps, the first 30 minutes to an hour, the second is generally about 3/3.5 hours) plus she STTN 11.5/12 hours. Don't get me wrong, I'm thankful for so much peace and ease surrounding at least one of my kids sleep but it seems like she sleeps a lot. How much sleep is/was your LO getting at 18 months?