Right AirPod is way quieter than left AirPod.

I’ve only had my AirPods since February and out of no where the right AirPod is playing audio barely loud enough to hear even when the volume is all the way up. The left AirPod plays audio completely normal. Nothing has happened to them and I don’t know what to do. Pretty upset that I paid $159 for AirPods and in 3 months one of them stopped working. :( I don’t know what to do.