How do I program replacement left AirPods Pro to existing case

Based on the recommended article mentioned above:

1. Put both AirPods in your charging case.
2. Open the lid and check the status light. It should flash amber.
3. Press and hold the setup button on the back of the case for a few seconds. The status light should flash white.*
4. On your iPhone, go to the Home screen.
5. Open the case—with your AirPods inside—and hold it next to your iPhone. A setup animation appears on your iPhone.
6. Tap Connect, then tap Done.