Have you tried: clary sage oil, castor oil, evening primrose oil, raspberry leaf tea, birthing ball, scrubbing the floor, walking sideways up and down stairs, hot bath (not too hot though) wearing nice new knickers (so your plug/waters will go), booking an evening out (like a nice meal, cinema, etc).
Also - I found out - when it comes to sex, you need to either have it A LOT (like 20 times in a day - and obviously unprotected) for the prosteglandin in the sperm to soften your cervix, or you need to have a really good orgasm.
Could you aak your MW if she will do an early sweep? If you are already a bit dialated she should be able to by now.