Recently I've had a few folks ask me why their echeverias are shooting up like beanstalks. If your indoor succulents start growing tall and lanky, that's an indication that they aren't receiving enough sunlight. The plants' cell walls are weakened by the lack of sunlight. Succulents that have very long internodes and smaller leaves are trying to reach a light source to photosynthesize. This is known as etiolation.
So here comes the bad news... Etiolation cannot be reversed. The lanky growth that occurred is now permanent. The good news is you can pluck the lower leaves off the stem to grow new babies or clip off the rosette and replant it. The more you grow, the more you'll know.