I'd approach the problem differently.

Shims between the shoe and pedal put the foot too far from the spindle and cause instability in the pedal which will want to rotate (cam) under your foot.

Before dealing with a Shimmed pedal, I'd try mis matched cranks, using, say a 180mm for the long leg, and a 165mm for the short one. You might get by with a narrower differential, adjusting the saddle height based on the shorter leg.

If there's a bike co-op where you live (it helps to list your city of residence in your profile) drop in and see if you can borrow or rent a variety of cranks to experiment with, and if that leads to a solution you can buy a nice pair of cranks and make it permanent.