One AirPod Dies Really Fast

Hello,

I have a set of AirPod Pro's I purchased 2 years ago. Lately when I charge my case and the AirPods to 100%, and then use them, the left AirPod dies in about 30 minutes while the right one last the normal amount of time. I tried cleaning them, resetting the case, etc. I also tried setting the right one to be the one used for audio, but it makes no difference.

Is 2 years the normal timeframe for them to start dying? They are out of warranty and I'm wondering if I should just order a new pair. Thanks