If you have a stretchy wrap like a hugabub, you can use that to help hold baby over your pelvis more. I used both tubigrip and a hugabub.

In the last few days of my pregnancy, I also spent some time lying on my left side, belly dancing and holding my bump up and over the pelvis while doing (very unco) squats. i think all these helped bub to get in a good position for her to birth.