Francisb,
Do you have a family member or close friend who can go to your appointments with you? It really helps to have someone there to take notes while you listen and ask questions.
It also helps if you write down your initial list of questions ahead of time, and bring them along. You obviously know this doctor quite well, but too many times a doctor is keeping a tight schedule and patients who can't remember their questions or keep track of the answers end up learning much less than they could.
When you have a treatment recommendation to consider,
here is a sample list of possible questions.