A.F.
Get your daughter very involved with planning for the baby. Let her know she is going to be Mommy's big helper. We had my daughter help us put things together for our son (having her hand us the parts we needed, stuff like that). We always referred to the baby as "Our Baby" so she felt like he was hers too. Make sure when the baby comes she gets a lot of attention still and ask her to help get you a diaper or wipes, remind her how big of a helper she is. My daughter is 6 and she is such a big help with our 8 month old. It just comes naturally to girls, They are little Mommy's.
As far as the changings and night time feedings, it will all come back to you. It's like riding a bike ;)
Congrats on your new life :)