J.S.
You're ONLY 36 weeks. You have plenty of time for your baby to turn on its own without having to intervene. Many babies turn at the 38 mark, and some turn when you go into labor and even during labor. My best friend had an external inversion done with her first baby at 36 weeks and it worked, but he turned himself right back the next day. For all the good it did her, her entire belly was bruised and sore because of the inversion. He ended up naturally turning head down and engaging when she hit 40 weeks.
I really would avoid doing an inversion this early. I would wait and see if the baby does it on its own because there's plenty of time. There are also more natural ways of coaxing the baby such as "baby spinning" and shining a bright light down near your pelvis. You can also get down on your hands and knees and put your chin to the ground with your fanny raised high in the air. Do that for as long as you can stand it a couple of times a day until the baby turns.