Another voice saying, yes, u/s are VERY inaccurate. So many stories of 10lb babies turning out to be maybe 7lbs!
I'd be doing all the natural induction stuff, some EPO in the vag, some RRL tea, some sex if you can, all that good stuff

And long walks, and then see if there's a project to lose yourself in-- I had just made a list of some last things to get done (bake for the wonderful nurses my OB handpicked to support natural birth, pick up some last things, etc) and of course went into labor then

Maybe a bit of gardening (all that squatting, right?) or baking or sewing? Cook up some meals to feed the freezer? Or just run around with your nine!

Good luck!