Re: BF 5mo nurses but won't stay asleep til 1/2am :(
with LLLMeg. Nurse her to sleep. It's normal, it's easy, and no matter what the naysayers claim, it doesn't make a child clingy, unable to sleep alone, or turn her into an axe murderer. The sneak away method also works. Co-sleeping also works for a lot of people. That's what I did with my kids.
My first kid was pretty easy to get to bed. Nurse her to sleep, and then she'd be down for a few hours. My second daughter, on the other hand, was like a broken toaster. I'd nurse her down and she'd pop right back up! It was very frustrating. I'd nurse her, she'd seem like she was asleep, I'd go downstairs for my first "me time" of the day, and then she'd start crying again! Sometimes it took several hours to get her to go down for a longer stretch of sleep, at least in her first 6 months of life or so. So what you're experiencing... Maybe it's just your baby's personality?
FTR, a lot of babies can't or won't keep a pacifier in all night long, no matter how they are fed. A lot of bottle-feeding moms are up all night, replacing the pacifiers in their babies' mouths again, and again, and again....
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"