I agree GF,There are so many issues that can be attributed to sensation loss and/or impotence. Blood pressure, diabetes, etc, etc.
What has helped my mature gentlemen is warming or tingling lube used under condom, a very thin-brand condom and a vibrator/cock ring (sold at drug stores next to condoms)
For the gentlemen upwards in years, a stronger vibrator, at the base of penis, underside can be helpful. But many times we have to continue with hand/vibrator only, condom off, as I don't do bbbj.
My advice is after diagnosis, accept that your body is different. Do
not label yourself as unhealthy or non-sexual. You are still a sexual being. We all change.
Research providers, make sure you are with someone who has awareness in this area or seems open to the idea of some trial and error within the session.