I recommend spending a lot of time with your lookalike. I think it introduces your polr in a way that is more acceptable to you. For example, if you are an INTj and spend a lot of time with an INFj, you will see the places where they are using your creative function that you would not do. In this way you can sort of simulate repressing your creative function as your superego and conflictor would do. By the way, I think interacting with your comparative type isn't as effective because you have the same program function (duh) but this means that you are not experiencing the repressing act yourself. People often learn more by experience.