Traditionally distcance from the source deenoted how serious a problem was in TCM, so having do some qi-gong therapy or qi projection was needed for when some was mildly unwell, then the next stage for worsening disease was acupuncture and then if someones life was threatened they would go internally and give then herbs to ingest. Do you really need herbs to correct yourself? How bad are the symptoms? to be honest even learning some basic acupressure with qi-gong would probably be the best route.
By the way who diagnosed your Kidney Yin Xu? and what level was it diagnosed? How bad is it? Sometimes merely making lifestyle changes can bring it back into balance without direct treatment.