Jade Propogation Help

I was left this really nice jade by some old neighbors that also shared my love of plants. But recently she hasnt been doing so good and I'd like to propogate what's survived my inexperience with this type of plant.

I've tried cutting off pieces when she was healthy and letting them callous but the ends always end up shriveling and not even coming close to callousing.

Would using cinnamon on the ends of the fresh cuts help keep this from happening? I'd really like to be able to save this plant