If you want your baby to be born naturally and asap, then ask the question:
What triggers a delivery?
It's a cocktail of hormones. How it exactly works is unknown, but what we do know is this.
Adrenaline has got a negative influence on this progress. Bright light, stress, exercise it all gives you a higher doses of adrenaline.
Oxytocin plays a big part in starting and during the delivery.
Here is a page that tells you all about it.
en.wikipedia.org/wiki/Oxytocin
It's also called the love hormone.
Have a nice evening with your partner. Don't eat to much, but have some comfort food, dimmed light or candle light, soft relaxing music, a massage, sex and better would be if you'd have an orgasm, as this also gives you an higher level of oxytocin in your blood.
Basically just have a nice relaxing, romantic night with your partner. If you can end it with sex and for you an orgasm. That would be a nice extra bonus.
I hope that I didn't went to private there with my advice.
Best of luck!
Sylvia