I'm sorry to hear about this.

For those with ringing in the ears, you may find a reduction in
symptoms by eliminating caffeine, and possibly sugar as well.

Caffeine is especially bad because it enables the transport of mercury
into cells and then causes many symptoms in mercury toxic people,
especially tinnitus (ringing in the ears). It can act kind of like an
excitotoxin and cause false-firing of neurons and hence the ringing sound.

Hope this helps.