Will it work?

I'm 3.5cm dilated, 90% effaced, and baby is at -1. I've been given the okay to do natural remedies to help move things along, which he doesn't think will be very hard with my cervix being so thin and baby being so low. My question is, do you think evening primrose oil would help speed things up? Did it work for you? Any other things I could try (other than walking, sex, bouncing on a ball) to help move things along? Dr said he's surprised baby hasn't just fallen out already (joking lol) so it shouldn't take much to start the process. All advice appreciated. Thank you!