Do you take charge here, or let LO lead. For example, DD went down at 11:30...do I wake her after an hour so that she'll go down later for another one hour nap, or do I let her sleep as long as she needs? How do I make this transition?
*she usually naps for one hour around 11am and 4pm, bedtime at 7:30pm
Re: Weaning from 2 naps to 1?
I definitely follow LO's cues and would never wake her. When DD was around your daughter's age, we thought she was going to one nap and tried it for about a week and it just messed her all up and we went back to two naps. She still takes 2 most days. Today, for example, she woke at 8am instead of 7am, so I knew she wouldn't go down around 10:30 when she normally does. I pushed her nap back until 12:00 and she's been asleep for 2 hours now. She probably won't take a second nap.
The biggest problem I have is that she will ALWAYS go down for her first nap no problem, but she fights her second nap. So she is awake for a very long stretch of time in the afternoon (which is not always tons of fun). If you are going to manipulate anything, I would push her morning nap later little by little and then cut out the afternoon nap.