Question for STM!

Has anyone been told that their babies head was measuring 99th percentile 9.3cm at 34 weeks and been able to deliver vaginally at 40 weeks? Or is it appropriate for me to request an induction at 38 weeks? I see the doctor Monday to address the most recent growth scan since it hasn’t slowed at all. I’m terrified my sons head will be 10+cm and I won’t even get to try to push by time he’s ready to make an entrance on his own. TIA.