Hello Jessica,
I think you are right in that you need to extend A time, how is she when you put her down for naps? Is she cranky, or easy to get to sleep?
It might be worth starting on the second nap (the lunchtime one) to extend the A time. I say this b/c my lo can do much less A time before his first nap of the day, but can do more later on.
So, say she wakes up at around 10am, would you then put her down again at around 12pm? (Correct me if I'm wrong, btw). How about starting gradually to increase the A time in increments of 10 minutes, don't just suddenly decide to increase it by half an hour, that will just end up with a cranky baby
. When I was doing this, I found a good way was to take ds outside for a while. The change of environment and interesting things to look at kept him going for a while longer, and I think the fresh air helped him sleep too. Can you do this where you live?
I think if you can extend A time, and have longer naps, you may find dd not needing the catnap, my ds dropped his recently when his other naps improved.
Should I be trying to get to set naptimes regardless of her wake up time? And what if her first nap is short, do I still keep the same afternoon nap time or adjust?
I think you should really be trying to stick to a routine, rather than a schedule, and look at every day as it is, rather than set times. Look at nap times from when she wakes up, with a particular A time, rather than set nap times, b/c, if she has differing wakeup times, this could give her a short nap if she's not been awake long enough, etc. Or, if you prefer, you could wake her up at a set time everyday. If she's waking up at the same time everyday, then her naptimes will be at the same time. Have a look at this thread
http://www.babywhisperer.com/forum/starting-the-day-vt48710.html .That's up to you, really, whichever you prefer.
HTH, let us know how you get on.