^^What Traveller said - the RLT will help tone the uterus but will not induce labour. Clary Sage can encourage or strengthen contractions, although you should use it carefully.
Unfortunately the bottom line is bub will comes when they are ready... I know, I tried everything! The best advice I can give you is to try & relax - I know that is much easier said than done - but honestly, I stressed so hard trying to hurry labour along and in the end it wasn't until I relaxed & let go that it happened.
I hope you're not waiting too long.