Well you day is a good length
Do you think she might be OT? Have you ever tried a short AM nap and long PM? I've found that has worked best for my dd2 for a few weeks now.
Re feeding back to sleep-it really is down to you. If you want to tackle it, we can, just be prepared for the crying and standing your ground. I'm *still* not ready to tackle my 15mo and her 1 NW (most nights)
But absolutely if you want to stop the feeding then it can be done
What do you think?