You don't say where you are having the baby; I'm guessing public hospital as you didnt mention a private doctor? Your major issue is the fact that you are trying for a VBAC as opposed to the size of your baby ( which, as others have mentioned is often very wrong in estimates and also the size doesn't necessarily equate to a harder birth). To have the best chance of success you need to know how supportive the hospital is of your choice ie when will they suggest induction as many hospitals wont let you go more than 7 days overdue and won't induce for a VBAC so it would be a Caesar. Assuming you know they are supportive, then you need to find out what their attitude is towards these things as that will determine whether you get to the starting line. Good luck, but if you are under time pressure and your baby isn't ready, realise that that does narrow your changes