You are severely underestimating how much of being a doctor is having to defend the route of standard care against what is actual nonsense. For every path outside standard care which might actually amount to something useful, there are a hundred totally useless, potentially harmful alternative paths. I'm sure in the modern era, when they are just trying what they know is the best researched, best chance they know for a successful path for you or your loved ones, they are beyond sick of hearing your alternative theses assembled from mommy blogs and witch doctors.
In other words, I suspect the emotions you're detecting are probably exhaustion and annoyance, and any genuine fear is most likely going to be that they fear for your outcome should you deviate from what they believe to be the best course of action.
In other words, I suspect the emotions you're detecting are probably exhaustion and annoyance, and any genuine fear is most likely going to be that they fear for your outcome should you deviate from what they believe to be the best course of action.