For me, I don't think the desire will ever go away. Change, yes, but not go away. Be manifested in different ways, yes. Ebb and flow, yes.
Strictly speaking for myself... For a few decades it was like pushing a car up a hill. The hill was composed to a large degree of my everyday public "look", and also to the degree I took things when en femme. Looking at some of the boy mode vs. girl mode pics, some can transform so beautifully and completely that they can push that car way up the hill for their en femme times, and pretty much let it roll down to the bottom for every day. I didn't do that. I had long hair, long nails, shaved legs, and wore panties and feminine-leaning clothes when I was a teenager, so I was already part way up the hill. When I got married, I just kept pushing. Instead of letting that car roll back down, I'd throw something under the tire to keep it from it. I started wearing makeup, and threw a rock under the tire. Started wearing nail polish, and threw a rock under the tire there. Started wearing a bra every day, and again, threw a rock under the tire. You get the idea. I've hit a few obstacles that caused that car to roll back down out of control, but I've always started pushing it back up. I never knew what was beyond the top of the hill. I didn't really want to know. No matter how hard I pushed or how far, it seemed there was always a little further to go, and I liked it that way.
Particularly when it came to my wife, I was always afraid of losing ground. Once I got her used to me rolling my hair, for example, I was afraid to retreat an inch, even if I wasn't all that into it at that particular time. I threw a rock under the tire there very early on. Not a good move, BTW.
Handled correctly, which I did not, this can add a lot to the adventure of life. Utterly harmless and cripplingly destructive at the same time. I don't want the desire to go away! Along with it would go a lot of the joy of life.