I don't know of any way to control the subject of one's dreams although I'm fairly certain there are more than a few types of psychoanalysis dedicated to the topic.
Mallory OrtbergAs long as you don't think he's just pretending not to mind for your sake, it sounds like he has truly accepted that blow jobs are too difficult and painful for you to perform, and he's still very satisfied with your sex life. Take him at his word.
Mallory Ortberg