This week we've been trying out the one-nap thing and I'd say it is definitely going well. Anna goes to bed around 7:30 PM and she sleeps in until 8:30 or 9 AM! Then she takes a three hour nap starting around 1 PM. This has mean all sorts of productivity for me (in the book-making department, anyway--I just have December-March to complete right now) since I've been getting up at 6:30 when Craig gets out of the shower.
I can tell that Anna gets a little fussy mid-late morning but I'm sure this is part of the adjustment period. Before she was taking a short nap or no-nap in the morning and then her afternoon nap was only an hour or hour-and-a-half.
This is great timing since I just found out about a mom's group in town that is all about arranging playgroups (they have a moms-night-out, book club, and other stuff, too). We will start going to a playgroup next week and I'm interested to see how Anna does. James & Claire came over yesterday and Anna was a little skeptical about having to share her toys (she had no problem going to their house and using theirs though!).