I completely agree with Mama2C! PU/PD is probably not going to be the best solution. With DS PU/PD would stimulate him more than help him calm down, with exception to illness, teething, etc when APing is used in our house.
WI/WO is a great tool to use. This is a great link to read!
http://babywhispererforums.com/index.php?topic=80750.0 It sucks the first night or two...I won't lie! You and DH might actually go insane a few times....just make sure it's just one of you while the other is still sane
. You have to keep in mind that your dd has had you in the room with her to help fall asleep, so when she sees you walk out, it will be totally different. Explain to her that you won't be in the room anymore and that when you turn off the light and walk out, then it is time to lie down, snuggle with lovey, and go to sleep. And then begin WI/WO if necessary. Are you familiar with mantra crys vs real cry?
For the night feedings, I again agree....they need to disappear! Especially if her appetite is lost during the day. Those feedings are no longer necessary and are rather habitual. When we stopped night nursings, we began a week before explaining to DS that in a week (and counted down as the day got closer) mommy would not come to nurse him when he woke up. Instead Daddy would be there to help him go back to sleep. Sometimes he would take in a sippy of warm milk....but truthfully we didn't do that much because we didn't want to replace a breast with a cup of milk! Most of the time he would go in, pick up DS, show him his lovey, and say it's time to go back to sleep. There was rocking and other APing which occured at this time. But it only took about a week to get over the habitual wakings to eat! DS still nurses once a day....what can I say, I have raised a booby monster!
I don't suggest tackling both of these issues at the same time. You could possibly go crazy by doing that. I would suggest starting with tackling the going to sleep issue at the start of the night. That might also help eliminate the NW's since DD would learn again how to put herself to sleep. Be prepared for WI/WO to take up to an hour some nights....but it's only a week or so of hell....think of the pride you'll feel when you can lay her down, walk out, here her talk to her stuffed toys about her day, and then fall asleep!
Keep coming back for help too....we all receive advice and then try and help with advice where we can!