wow I could have written that word for word when dd was one.
I had had enough too, and went to the doctor to ask if I could try fenergen..
well he lectured me for half an hour on child abuse and didn't offer any help. She was waking 10+ times a night and had been since birth (funnily enough, the only time she slept through was once at 3 months too)
Anyway the point of this is, a. it does get better so hang in there, and b. although I had tried similar things before, the one thing I found that did help was a routine that my auntie found in a newspaper clipping not long after. It was proven to help in a university study.
It goes 1. bath, 2.massage in bed, 3. quiet time in bed talking or singing songs or whatever - but with the lights off, and 4. put them to sleep in the usual way (for dd this was bf). These steps are in succession (eg don't go out to the kitchen or to telly in between) and from memory it was total of 1 - 1/2hrs. But I didn't worry to much about how long it took. It really did work for her. I had tried routines (and everything else before, but this one did work and I think the main thing was the time in the dark.
Also I would like to recommend an osteopath who specialises in children. There is a good one in brisbane, but I think there is an association that you can ring and ask who is near you. I took dd to one last year as she'd started waking up alot again and it also really helped.
So good luck. Hope this helps you.