I don't know the answer to your question, sorry, but would be interested to find out. I had a planned CS for my 1st after a diagnosis of primary tokophobia - the psychiatrist said (and everyone else agreed!) that given my levels of anxiety and the fact I was pregnant, counselling wasn't worth trying.
I did ask what it might have involved, and was told - a mix of talking about my fears to a counsellor, 'aversion therapy', where I would be exposed in a controlled way to increasing levels of 'birth' engagement - images of birth etc (which is weird, because seeing images of birth in a book when I was very young was part of the whole problem) - general techniques to manage anxiety, such as breathing, visualisation, self hypnosis if appropriate.
Now - I'm not a sceptic about this stuff, having had depression and counselling over the years which was very helpful for me. But I do know it's not a magic wand, and can be a long and winding road, so I get very frustrated when people pop up on threads and blithely advise people to 'get therapy' as if CBT or similar came with a guarantee on the tin. It's also asking a lot of any therapy to get you to a given point, which is where you need to be to give birth. Say someone has a phobia of spiders - it might take a lot of work to get them to the point where they could stay in the same room as a spider, and that would be a huge advance for them - but they still wouldn't be able to pick it up and give it a kiss!
Which was largely the issue for me and counselling/therapy. They couldn't see it getting me 'far enough' in time. I think too because it involved longstanding issues to do with sexual abuse as a child, it was a fairly complicated mess to unpick, IYSWIM.
One interesting thing about anxiety management is that it tends to assume that your anxiety is the problem, not the thing you are worried about. Sounds obvious, doesn't it - but to me, there's a world of difference between fear of birth and a fear of, say, buttons. Or worms. Buttons and worms are really not going to harm me. It's easy to see how that fear is irrational. But birth CAN be a risky, dangerous, damaging and painful process. I'm not saying that's ALL it is! Or trying to deny anyone's positive defintion of it! but I do see where you are coming from, I think, in terms of the things you fear still being possible.
Interestingly, in the letter my psychiatrist wrote to the consultant MW (the MW let me read it, otherwise I wouldn't have seen it), the psychiatrist mentioned the 'uncertain' outcome of birth as one of the reasons that counselling wouldn't be successful for me, and that ELCS was a preferable procedure. What I was told this meant was that if a VB went badly for me or my baby, then they were very concerned about the consequences for my mental health - essentially the strategy of 'try and calm yourself down and give VB a go' wasn't a sensible one.
It will be interesting to hear from people who have been through counselling for secondary tokophobia, esp if, like you, they had a 'normal' VB first time round.