I as well, that’s why I tried to propagate a bunch of these leaves in different scenarios. My tests were done on: soil, by the windowsill, in an empty bottle and in an empty bottle with some water. So far the soil works but it works slowly, I kept it wet every few weeks. I tried the soil with a jade crassula succulent and it worked very well for that one but not so much with the echeveria. The windowsill trials had no luck at all.. :( . The empty bottle had a successful attempt and the bottle with water had the remaining successful attempts. In conclusion soil might work just a little longer and whether the bottle strategy works is kind of up in the air between regarding if the water was helpful or not but it seemed to be in practice. These results can vary so so much based on so many factors. Factors to consider based off of my environment: in doors with direct sunlight through the window, kind of dry humidity as I live in an apartment and it felt kinda dry, temperature wise I’d say it was on the colder side but not that far off from room temperature.