toogie

I want to use (don't shoot me) poly high loft batting for a very large queen size quilt. The problem is I only have it half the width I need...Question, can you piece it and how do You piece, if you do? would I piece it when join goes right down the middle from top to bottom? or Do I use the whole width in the center and make two joins on each side?

I searched online but wanted real advice from people who have tried already. This quilt is not for show, for everyday use.​