Oh hun Its so tough when you cant get enough sleep.
Just to let you know-Sophie has a nap after dinner and sometimes a nap about 8.30 but she doesnt want to stay in bed til after 9.30-10pm, she will have her last feed just before she sleeps then, and some nights she'll wake 2,4,6am other nights she'll wake 4ish and 8ish I think she has slept through twice. None of my babies have been regular through the night sleepers at 6 mths.
Have you tried giving her a bottle of warm water when she is waking so much. It'll make her feel full then but allow her to get properly hungry and after a few nights should change her routine a little.
The other thing I suggest is a dummy- if she choaks on it, go down a size. Best to introduce it at a time when she is not upset- perhaps after a feed when she is use to sucking on something?

Hope the chiro helps