Look at the bottom of an old pair of sneakers or shoes. If they wear more on one side, that's a problem. I cut thin crescent wedges and tape them to the outside of the innersole on the bottom of the innersole. They are 2 or 3 inches long. If you wear the inside side of sneakers do the opposite.

You really should consider a pro fitting. There's a bunch of possiblities. For example, something as simple as your saddle being low can make enough of a different to kick of IT symptoms in some people. Your leg should be 80-90%
extended.

Another thing you can do is go back to old fashioned pedals, at least for a while. It's rare to have that without being clipped in.