Hmm, I'd keep up everything that you're already doing. Some acupuncture can help things along nicely but, as with all the other remedies, it won't make anything happen if bubs isn't ready.
My other idea (
ducks in anticipation of eggs being thrown for such an obvious yet difficult suggestion!) is to relax. Yes, i know, i know! Easier said than done. But on a very basic level, our bodies can't 'let go' and birth properly in a fearful or anxious state. So the first thing I would do is repeat to yourself until you believe it - "My baby knows when the time is right, my body knows what to do, it will happen on it's own". And, remember, no-one can physically force you to have an induction and no-one has ever been 50 weeks pregnant!!
xox