DD1 was ten months old. She dropped napping entirely at 2 years old.<br><br>
The twins were about 15 months old, and even then DS had a hard time staying awake until naptime. Even now at three years old, he still sometimes takes a ten minute snooze in the morning, and then a full nap in the afternoon. DD2 gave up the morning nap easily at 15 months, and now at three years old still needs an afternoon nap.<br><br>
So I think it varies a lot. A lot depends, too, on how long the LO sleeps at night. DD1 slept long, sound nights, so it was easier for her to do without two naps. DS, on the other hand, was a nurse-every-45-minutes-all-night kid, and rarely slept past 6 am, so he really NEEDED his naps badly. DD2 was somewhere in the middle.<br><br>
I cut morning naps when it got too difficult to get them to sleep so early. I'd say try it, if the morning nap has become a fight, but push the afternoon nap up a little, like to just after lunchtime. That's what we always did, and it worked well.