At least you are bringing it up. It absolutely blows my fucking mind how common it is that guys are on here making up these utterly idiotic lies and trying to do this without being honest with their wives about it.
This was my approach. Instead of talking to them about how I felt about it, or about myself etc. I talked about how they felt. I just asked all of them this question. First, I bought a dildo of the same dimensions that I want to get up to, 6" in
Girth. Next time we had sex, I fucked all of them with that dildo. Then I asked the question, "If you could push a button, that would keep me, _exactly the same_ guy in every single way, nothing changed about me whatsoever, except my
Dick was the same size as that dildo, would you push it?" even the ones that hesitate out of shyness or worry they are going to hurt your feelings, you can very easily see the little smile and shyness and push them to admit their real answer.
Anyway point is, every single one of them all admitted they would push that button except one, but she's only 18 and I just took her virginity like 3 weeks ago and she thinks I'm absolutely HUGE at 5" lol so that's to be expected.
So from there it's easy. SURPRISE guess what, that button really exists and since we're on the same page, I'm pushing it! win win.