Hello there,
This is a great question! ...How often should we repeat a targeted sequence to improve the health of a Qi deficient organ....I think it is really difficult to say. Generally deficiency takes longer to treat then an condition of excess. As an acupuncturist I try and council my patients on lifestyle and nutritional choices to help balance their condition, so they are empowered to make changes in their lives to support their health and the acupuncture treatments. Acupuncture is a piece of the puzzle and not always the full picture.
Yin yoga is a great practice for deficiency because it doesn't tax the system like other forms of exercise might. When you are being treated for a condition with acupuncture you may receive the exact same treatment once or twice but generally the practitioner treats what your concerns are at that time (of course keeping the root cause in mind)...are you fighting a cold, experiencing stomach upset, a bout of insomnia, a headache or maybe PMS....
I would think similar to how your acupuncture treatment ebbs and flows to meet your specific needs so should your yin practice. As far as receiving acupuncture everyday I don't think this is necessarily a negative thing especially if we are working with something acute and frequent treatments are often prescribed however if you have a chronic issue that you are working with it may be a little difficult to access the impact of the treatments if there is too short of a time frame between sessions.
In other words, I don't really have the right answer and I am not sure there is one. I am keeping my eyes open for any studies on the subject and will let you know if I find anything. I suppose like everything it is relative and people improve faster or slower then others. The great thing about yin is that we have time to explore and investigate what we are feeling and how we are feeling in each posture to give us feedback and help us identify our needs with more clarity.
I hope this helps!
Cathy