Fusible batting will make your quilt very stiff. Have you tried Elmer’s washable school glue? Thin it slightly then drizzle it on the batting then use a warm iron to attach your top to the batting then flip over and do the same for the backing. Drizzle thin lines so you don’t get clumps. Smooth out wrinkles when you iron it. When dry, set and then quilt away. The glue will wash out when you launder it. There are some good you tube videos on how to do this. I did it for years before I got my mid arm. Had an old ping pong table that I used worked great.