Compare the two shapes directly
Place the first chord, then study the next shape before moving. Look for a note that remains on the same string and fret. A finger on that note may stay as an anchor while the others travel. Also notice fingers that can move as a small group. This comparison turns a transition into a specific movement problem rather than two unrelated pictures. Use the actual voicings from your arrangement, since a different version of the same chord may offer a completely different route.
Keep the anchor only if it helps
Try the change slowly with the shared finger planted, then try it with a gentle release. Compare comfort and timing. An anchor that pulls the wrist into an awkward position or prevents another finger from landing is not useful simply because it is possible. You can also keep light contact without maintaining full fretting pressure. Practice several relaxed repetitions and pause between sets. The objective is an efficient path that your hand can remember, not strict obedience to a rule that fingers must never leave the fretboard.
Train the arrival in rhythm
Count four beats for each chord and place a single strum on the first beat. Prepare the new shape during the available space, then gradually reduce the lead time. Once the arrival is dependable, use the transition inside a short song phrase from your verified AudioChords progression. Add the normal strum only after the movement survives the surrounding chords. If you sing, test the same change under the relevant lyric rhythm. A shared finger is valuable when it frees attention for the music; it is only one possible technique among several ways to make the next harmony arrive clearly and on time.