Autumn can offer useful propagation conditions for some succulents, but the season's name does not guarantee that every plant is ready. Identify the succulent and check whether it is actively growing in your conditions.
A cutting method suitable for one species may fail with another. Confirm whether the plant is propagated from a leaf, a stem section or an offset before collecting material.
Prepare a small, labelled batch
Have suitable containers and medium ready, and label the plant and date. Keep different methods or species separate so a later comparison means something.
Follow advice for the identified material, including any preparation of a cut surface. Do not assemble a routine from unrelated demonstrations simply because all the plants look fleshy.
Monitor moisture, temperature and light as the local weather changes. A tray near a window can enter different conditions before roots are established. Record the plant's actual response rather than expecting a universal rooting deadline. Once growth is established, plan its transition to the next container carefully; propagation does not finish at the first sign of a root.
The RHS propagation section distinguishes stem cuttings, offsets and leaves of suitable species. Choose the method from the identified plant and available material; the fact that the season is autumn does not select a method for you.
Related reading: Propagating Succulents in Autumn: Seeds and Cuttings.