Mason was back to back so I spent lots of time when I was pregnant with Brody getting him into the right position. I had a quick oogle and found this which is very useful.
The best way to do this is to spend lots of time kneeling upright, or sitting upright, or on hands and knees. When you sit on a chair, make sure your knees are lower than your pelvis, and your trunk should be tilted slightly forwards.
* Watch TV while kneeling on the floor, over a beanbag or cushions, or sit on a dining chair. Try sitting on a dining chair facing (leaning on) the back as well.
* Use yoga positions while resting, reading or watching TV - for example, tailor pose (sitting with your back upright and soles of the feet together, knees out to the sides)
* Sit on a wedge cushion in the car, so that your pelvis is tilted forwards. Keep the seat back upright.
* Don't cross your legs! This reduces the space at the front of the pelvis, and opens it up at the back. For good positioning, the baby needs to have lots of space at the front
* Don't put your feet up! Lying back with your feet up encourages posterior presentation.
* Sleep on your side, not on your back.
* Avoid deep squatting, which opens up the pelvis and encourages the baby to move down, until you know he/she is the right way round. Jean Sutton recommends squatting on a low stool instead, and keeping your spine upright, not leaning forwards.
* Swimming with your belly downwards is said to be very good for positioning babies [1] - not backstroke, but lots of breaststroke and front crawl. Breaststroke in particular is thought to help with good positioning, because all those leg movements help open your pelvis and settle the baby downwards. [3]
* A Birth Ball can encourage good positioning, both before and during labour.
* Various exercises done on all fours can help, eg wiggling your hips from side to side, or arching your back like a cat, followed by dropping the spine down.
Hope that helps, GOOD LUCK!