Both my old T and current T start off this way too.

I appreciate them asking me how I am, but most days I HAVE NO IDEA. And sometimes I just say "I don't know how I am," because it's the truth. I don't know.

I feel OK most of the time. Most everything runs deep under the surface with me, so I'm really not aware of how I'm doing. I'm just trucking along as usual.

I think you should tell your T how that question makes you feel. It could be really helpful...