Flatlining and loss of libido. Doctors don’t recognize porn addiction

Well it’s start of day 30 and I read an intesting post on “retrain your brain” It set off a little ahha moment for me. I realize now I may have been flatlining for months if not years. I could look at all the porn I could find and it did nothing for me anymore. I dident really enjoy it and I could never get a hard on just some sort of floppy thing. I would do it anyway even if at times it would take 40 minutes. I could see an attractive women and there would be some sort of response somewhere in my brain but that’s it. It was like deep in my brain there was a reaction but it never got anywhere. As I am 60 this month and on antidepressants when I spoke to my doctor he would just say “It’s the medications” or “It’s your age” I had all kinds of blood tests and checked my testosterone multiple times and it was always “normal” for my age. I am relatively fit and not overweight. It was never mentioned once by my doctor that I could have a porn addiction. He never asked about my sex life of if I masturbated every day etc... it seems to me that even with all the information I found about the way your brain is changed with a porn addiction my doctor was completely unaware? I find him a good knowledgeable doctor in other aspects of my health as he has helped me through anxiety and depression.
So I seem too of found the cause of my problem but how long does it take to get past this stage? Anyone else had this issue for years?