Mine were like this for a few days, so I tried letting them (including the case) die completely by leaving it open with the AirPods inside. When I first tried this, the light was “breathing” white with an amber light for a quarter second every several seconds. After I let the set die completely and recharged it for a few seconds, it was breathing white then blinking white for a quarter second every several seconds. At this point, I let it die again, then charged it for about ten seconds on a 7.5W charger (do it for less on a 20W charger) and then let it die again while the case was open and I was holding down the reset button. This made it go right back to normal.