In my PhD, I have two supervisors who I meet every week. One of them knows my topic very well from one perspective, but usually not too involved with the mathematical design or methodology.
The other one has little knowledge about the application, but usually understands the mathematics behind it clearly. Till I produced my first journal paper, he was the one because of who I progressed in my PhD very well. He taught me the right research attitude if not the intricate details.
I’m in my fourth year and I am trying different things. He once told me directly that sometimes he’s not able to go through all what I’m doing because he thinks I’m becoming independent and he doesn’t have a lot of time. I totally respect it.
However, during my meetings now a days, when I’m discussing things with my first supervisor, he’s dozing off. I have been observing it for quite a while now. It really feels weird. And the way he looks at the screen when he’s conscious makes me feel like either I’m stupid, or the way I approach the problem doesn’t attract him much. Probably as he’s a mathematician, he feels whatever I’m doing is too simple for him?
As soon as I start discussing things about my private life or vacations, he is active again. I’m slightly intimidated by him so standing up to him to say this sounds not so nice. When others in the past never encouraged me to pursue a good research attitude, he did and that’s how I progressed.
How can I ask him about this politely but fearlessly? It doesn’t feel nice. To be honest, I feel it’s disrespectful also no matter how knowledgeable a person is. It shows indifference.