I too would use a super light fusible to keep this quilt together, applied to the wrong side. I did this to a small quilt that my SIL made at 18 as a new quilter. She put it away unfinished for decades and was about to throw it out as she had not used enough seam allowance or a small stitch, so it was fallling apart. I asked for it as it was made of all the jammies her brothers had been given as a traditional Christmas Eve gift from their grandmother (who also sewed the jammies herself). A treasure! I fused it with a very light fusible and used it as the backing for a birthday lap quilt for my husband, and it has stood up well.