I would say if you know the baby is head down, just keep your posture correct. Don't lounge back on the sofa, sit on a birthing ball can help too. Pelvic tilts are still good and can give those ligaments a stretch.
I agree with PP. No reclining, keep using the Rest Smart positions if they're not too uncomfortable.
This isn't the first forum thread responding with Spinning Babies or fetal positioning, of course, but it is really the first I've found when all the responses had this information presented as now as normal and expected emphasis of pregnancy. It shows how Spinning Babies has become part of our birthing culture. For that I am humbled and delighted.