Cesarean scheduled ....tips on inducing naturally?

Dee🤓 • Had my boy Dec. 16th 2015 after having three miscarriages. Now I am pregnant again, after another miscarriage, so hopefully this one sticks. Due October 16th!
Okay, so I'm scheduled for a Csection at 39 weeks. My original plan was to have my baby naturally but because I'm high risk, they scheduled a Csection. But the doctor think i will probably go before that, and if so, she's gonna let me try to go vaginally. So, since I really want to do this naturally, are there any tips to induce naturally? I'm gonna start drinking raspberry leaf tea today. Any other tips? I've read nipple stimulation (though I have no idea how) and sex (we will be and have been doing plenty of that). Any other suggestions?