
I completely understand your fear.
With my first I was dilated to 2 and then 3 for what seemed like forever. They finally managed to wrangle me into an induction at 1 day shy of 43 weeks.
With my second I was so afraid that my body just wouldn't "get it" and we would have a repeat of everything that happened with the first. I dilated to 2 again with the second one about a month before my due date but I refused to get my hopes up because of my experience with my first. 2 days before my due date I went into labor and I was so happy I could hardly believe it!
For what is worth I have not dilated at all before going into labor with any of my other pregnancies but have went into labor at or just before my due date with each of them. In fact my entire labor with our 5th child lasted just a little over an hour from start to finish. I walked into the hospital and the next thing I knew I was kind of half sitting on the edge of the bed while a VERY surprised nurse caught our little girl!
Hang in there and dont worry, I know and understand your fear but from what I have read and learned from others things usually kick in just fine with second and later pregnancies. You and your little one will be on my mind.