Yes. :-)
We are talking weeks, months, or years. I would also add the possibility of never. You can't put everyone, and their situation,in reference to a time that it takes to do something, or have something happen. It has mostly to do with you, rather than, the qigong. Qigong works, no question. It is a tool in "your" hands.
You must have wanted to change something, as you did some research, yourself, and decided to order a qigong course that might change your current situation. I would be surprized if a blockage related to these cysts, was in the actual location of these cysts, or , was the cysts, although energy needs to move, freely, through there. They are the physical aspect or manifestation of something that you can see. What does that tell you? Something is off, and, it is something you can't see. The part you can't see is the important part to address. Qigong will address that part you can't see. Is it emotional? Very well could be, I don't know. Is it connected to a major organ in the body that is crucial to healthy living. Might be...Qigong will help that organ, if that is the case, and everything connected to it. The cysts, the location of the cysts, is just a sign that something is off. You are seeing only one thing, and it is on the outside. Qigong works on the inside. The outside changes with inside work. It outside and inside mirror themselves. At some point, you may even be able to see the inside. Master Lin can. How long does that take? Maybe soon, maybe never. You "can" trust the exercises to take care of you. "Knowing things" takes some work. Like how long, or why. It is an ongoing process. An opportunity to enlighten yourself.
I would choose qigong over any other healing modality. I would be open to other things too. Herbs came to mind, diet, etc., so I mentioned them. I just threw that out. Maybe massage techniques. I am just thinking out loud concerning the possible clearing or speeding up of, the release of the actual cysts. The outside part. I am just thinking of possibly speeding up the cosmetic recovery. I am not saying , "if qigong doesn't work , try these..." Focus on just the qigong for awhile. Re-evaluate the cosmetic part later on. Give it your all. Be positive. Again, that doesn't determine whether it works or not. It keeps getting back to that good, better, best idea.