AirPods Pro 1 popping/clicking sound

hello,

i've had my airpods pro 1st gen for over 3 years now and never had any issues until now. Recently i have noticed really annoying popping/clicking sound in my right ear but only when ANC/transparency mode is active. I couldnt find a fix for it and I dont really wanna buy new ones. Could you please give me some tips/solutions? Thank you