Jan, I don't know what Ritzy suggested to you, but if it were mine, I would remove most of the stitching in the area I circled, then spray that area with starch and flatten the area with my fingers, let it air dry, then re-quilt. The starch should be able to take in that much fullness. If not, I would also try to steam block the fullness until it's flat enough to quilt. Hope that helps!
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