Any tips on how to naturally start labour at 38 weeks?

I'm currently 34+5 and had a growth scan a few days ago which estimated baby to be 6lbs 1oz. This puts baby above 98th percentile. I was advised the consultant will want me to be induced at 38 weeks and have an appointment on thur to discuss this. I really don't want to be induced (I had a bad experience of induction with my son). Any tips that naturally bring labour on that work?