There is no fastest way to convert breech to cephalic position in 35 weeks of pregnancy, you can do external inversion surgery as prescribed by the doctor, but there are certain risks. At 35 weeks of pregnancy, the fetus is already relatively large, and the space for movement will be relatively small, so the fetal position is basically fixed, and it is generally difficult to naturally shift to the cephalic position. If you want to change the position of the fetus at this time, you may need to do external inversion surgery, which usually requires an experienced obstetrician to operate. Before doing the external inversion, it is necessary to make sure that the fetus is relatively small and that the umbilical cord is not wrapped around the neck. And after the external inversion is done, the fetus should be closely monitored for any lack of oxygen. If the fetus is relatively large and the amniotic fluid volume is relatively small, it is not recommended to take the external inversion method, just let nature take its course, and you need to go to the hospital for regular checkups and closely observe the fetal movement.