Just going to chime in on this as it mirrors some of my experiences.
Like the OP, I havent had a serious civilain partner in a good while. And prior to that I have had multiple instances with ED. As it wasnt every time I had a punt, I could never work out why. I'd get morning wood occassionally, I'm in pretty good health (sporty multiple times a week) Im a social drinker and dont smoke or do drugs. I wondered if it was down to the condoms I used, I wondered if I was just stressed/ had performance anxeity. Eventually I stumbled on the answer.
I had/have Porn Induced Erectile Disfunction
Basically Id taught my brain to ONLY be aroused to climax by video of strangers fucking! And with hindsight Ive found that my porn tastes had become more extreme over the years. Started out likeing POV stuff with the cute girl next door, then of late got into watching bi/TS stuff. This is a sign that you are addicted to porn. Your brain craves novel/new stuff. So over time the cute girl does nothing for you, and you have to go harder. Its truly a weird situation that no matter how hot the real girl, naked in front of me, blowing me or riding me was. It could NEVER compete with images of a pornstar getting railed.
This was obviosuly something to be remedied!
First step was to cut all hardcore porn from my life. This was actually easier than I thought.
Second step was to stop wanking. This is harder (cough!) But I have managed to get a few streaks going. Last (but one) was 60+ days. (You can google nofap if you want more info)
And when I did give in, I made sure only to wank over non porn images. I'll admit to you guys it was an attractive female friends social media (whose sadly, not likely to ever wind up in bed with me
) Apparently this is actually a good idea as I see the girl as a person (with her ups and downs and laughs and less than flat tummy and all the stuff that she is) and not just a series of body parts. Which is meant to be someway on the road to recovery. Its OK to be sexually attracted to a real person. On a realted note, I now wake up every morning with wood. And I've even noticed myself being more sexually interested in women in the real world. This tells me that my previous problems were not physical, but mental. The blood is flowing! But I dont feel that I am fully over my PIED and like a alcohol addict, I know the risk of relapse is always going to be present.
Like the OP, I was considering seeing a GFE type escort for a slightly longer booking. Maybe 2-2.5 hours to ease me back in to normal sex. I was planning to do this after a good few months of noporn and nofap. (A girl I saw a few years ago is still working and I had no problems performing with her back then so shes on the shortlist) If the OP is sure he wants to do this. That would be my suggestion. Perhaps if his budget allows, to consider an overnight or a dinner date type booking. Try and make the experience as "civilain/normal" as possible.
Though the flip side of me wonders if actually sifting through escort profiles for hours trying to find the right GFE girl is actually my "porn addicted" brain trying to get arousal from pics again. So maybe the best thing is to stop looking at anything thats sexual in nature for a time and then limit searching to just 1 or 2 agencies and choose a girl from them in under 5 mins. Then go and do something non sex related.
But at the back of my mind I'm still terrified that I'll meet a girl I like, we'll start a relationship/casual thing and I wont be able to stay up at all for her (though I at least know that my RO is pretty good
) So the idea of a few test runs does appeal.