Honestly is it possible that Ichigo does not have any quincy heritage at all? Instead he had to learn how quincy powers work to escape the quincy jail his former opponent placed on him. He has learned some quincy techniques due to needing to understand how they work to escape said cage. (he also learned how the quincy blut works based on his previous fight.)

NAHHHH this doesn't make since, Ichigo's mom had to be a quincy and he just inherited her powers.