AirPods Pro 2 battery dropped dramatically.

I have my airpods pro 2 for a month now and yesterday I noticed that the battery of the pods drops dramatically fast. For instance, the right one went from 100 to 93 in like one and a half minutes. I also noticed that when I charge them wirelessly, the battery of the case drops really fast too (the wireless charger is an Ikea one with like 5w charging but is qi certified). Is that a problem that i can fix, or do I have to have them checked by an expert?