When I was pg with my DD she was breech until 34wks and then turned but remained posterior. I did heaps of research into turning on both counts and found a lot of info that supports the fact that bub is that way because they need to be. I saw a great chiro who specialises in pregnancy and she had learnt some great stuff to help bubs turn from both breech and posterior.

I did all the spinning babies stuff and saw her 1-2 times a week in the last 8wks.

I had an ARM at 3 days past my due date as I was 4cm already and as soon as they broke my waters she started turning (took about 1 hr) she was born 2hrs later. Turns out she had a very short cord. So I stick by the rule that bubs knows best but I def believe that if it wasn't for all the chiro work and reading up on best ways to position bub and labour then my labour would have been a lot longer and more painful.

All the best, hope you find something that works for you