Form field layer with a shorter document

So, I had a six page document with many intricate fields.  But now they want a three page document--though luckily, I think, it's really about chopping off the last three pages and remaing fields map closely.

I create and upload a three page doc, and edit my previous tested and verified form field layer to three pages.  But, when I try to apply the field template that was just edited down, AS throws an error: you can't apply a 6 page field layer to a 3 page doc.   And no matter what trick I try, same result.

Any advice? Can I get rid of those three extra pages, somehow?  Hide them?