Propagating goumi

I live in KY, zone 6b, and would like to propagate my goumi shrubs. I tried rooting cuttings in soil with rooting hormone in early spring, and had zero success. Would like to try softwood cuttings in water. Has anyone has success with this? Also any advice on successful hardwood propagation? I think I did it in March. Was that too late? Is July a good time to take softwood cuttings for water propagation? I’m not too keen to try rooting the softwood in soil because I doubt I’ll be able to keep the humidity just right. Would love anyone’s experience with this, especially in similar climate zone.