Low volume on right airpod even after cleaning

Hi.

I have had my 1st gen AirPods for about a year now. I clean my AirPods regularly and generally take good care of them. To say it simple, I use them a lot. The right one recently became much lower in volume, so I cleaned it like I’ve done many times before. It helped a little, but it’s still a noticeable difference from the left one. Is there anything I can do?

Thank you!