Wrapping 3D object without having duplicate front/back images

I'm trying to create a simple lathed bottle in Photoshop and wrap a texture around it - the problem I'm getting is that it seems to treat the object as if it's got a front and a back - so it duplicates the 'wrap', front and back.  I want one surface to wrap around - any way to do this?! I've been searching everywhere 😞
Example images attached (photoshop in Example.png and Illustrator in Example2.png)