Removing DBS?

Hey everyone my dad had DBS in Bangkok hosptail late in 2016 after struggling with PD since 2004

after the operation went well and few years later my dad was in good movement with less medication and Dr has suggested him to do physical therapy twice a week.

The issue he’s facing right now that he’s very weak movement speaking very low as well also he felt pain in the neck which he’s touching the wire all time Dr programming the DBS and he said everything looks fine but Dad felt different.

After all this story above
my dad wish to remove the DBS and back as it used to be with medication which PD has only tremor on his the right hand.

has anyone been removing the DBS ?

Any suggestions would be really helpful for dad

Much appreciate all