It looks like a nice quilt. Could you use your darning foot-stitch around the stars and then do fmq? do one block at a time. start in the center and work out.
I tried SITD to do a large quilt and moving the quilt, repostioning it for each direction, was hard on my back and arms. You could find some patterns for quilting, trace onto paper and then follow the pattern as you sew, using your darning foot.