Hello, it's me, your Echeveria. I know I look a bit stretched out and not like my usual compact, rosette self. This condition you call "etiolation" is my direct response to my environment. I simply stretched my stem and spaced out my leaves to reach for more light. It was a survival tactic, but I understand you want to help me return to a stronger, denser form. Here’s what I need from you, from my perspective.
This is the most critical step. My stretching is a direct plea for more photons. To stop further etiolation and encourage new, compact growth, I need intense, direct light for many hours each day. An unobstructed south-facing window is my best friend indoors. If natural light is insufficient, please introduce me to a strong full-spectrum grow light. Position it just a few inches above my highest leaves and keep it on for 12-14 hours. You will see my new center growth begin to tighten up and become a proper, dense rosette again.
While the stretched part of my stem cannot shrink back, we can work together to create a new, compact plant. The process you call "beheading" is actually a chance for me to start over. Using a sterile, sharp knife, please cut through my stem, leaving a few inches of stem and the healthy, compact rosette on top. Allow this cutting to callus over for several days in a shady spot. Once callused, you can plant it in fresh, well-draining soil. With proper light, this new plant will grow compactly from the start. Do not discard the original stem and roots left in the pot; I may produce new baby rosettes, or "pups," from the nodes along the stem.
While light is the primary factor, my overall health supports robust new growth. Please water me using the "soak and dry" method. Only provide water when my soil is completely dry, and then water thoroughly until it runs from the drainage holes. This encourages my roots to grow strong. During my active growing season (spring and summer), a diluted, balanced fertilizer formulated for succulents can be applied once a month. This gives me the essential nutrients to produce those healthy, new, tightly-packed leaves. Avoid overwatering and over-fertilizing, as this can cause more harm than good.
Recovery and reshaping my growth takes time. The new, compact growth will emerge from the center of my rosette. As the new leaves grow in tightly, the older, spaced-out leaves at the bottom will eventually be reabsorbed for their nutrients and dry up. You can gently remove these once they are completely dry and crispy. My transformation back to a compact form is a gradual process, not an overnight fix. Your consistent care in providing strong light, appropriate water, and a stable environment is what will ultimately allow me to thrive and show my true, beautiful form again.