Our work with elite athletes serves as the proving grounds for our methods. Most people don’t play professional sports. But if our methods help athletes at the highest levels, they can work for anyone.
Check out the three videos below. We tend to see feet caving in during the squat for many different reasons. The goal is to be able to express torque through your feet and hips without the need for an orthotic. I agree with your physio in terms of not wearing the orthotics in OLY shoes. Ditch the orthotics and start working on rebuilding your feet.