What are the chances of being approved for a DTV visa in Thailand for medical treatments related to iron infusions and anemia?

Hello! I’m looking to possibly apply for a DTV under the soft-power category of medical treatment for iron infusions/anemia. I will be meeting with a specialist in my home country at the end of this month to get a better idea of how often treatments are needed, but from what I suspect it will be 1-3 months of treatments annually with a check-up every 6 months. From what I understand of the Non-Immigrant-O visa, I would have to be over the age of 50 to qualify (which I am not), so DTV might be my best option — especially if I need the treatments annually & a check-up bi-annually. What are the chances I am approved for a DTV for needing these transfusions? My primary reason being that they’re more accessible & affordable to me in Thailand, but I also do really love spending time in Thailand & would ideally like to also take language &/or classes during my time there if approved with the DTV & iron treatments help improve my energy levels.