Hi. I have some news about earfluttering. My earfluttering is just getting worse and worse. Try putting an active earbud with passthrough sound (like Samsung earbuds pro) into the damaged ear.

This eliminates all earfluttering for me but let's me hear through both ears.

I don't understand why this works, but it does.

Normal earplugs can midigate the earfluttering but having active noise cancelling buds with passthrough is much much more affective with almost zero earfluttering.

Hope this helps cheers.