Some good resources I have found for it
https://www.webmd.com/oral-health/adult-tonsillectomy
https://www.entlubbock.com/blog/adult-tonsillectomy/
https://www.ncbi.nlm.nih.gov/books/NBK564983/
I personally never have gotten mine removed at all. I for sure think it'd be up to whatever your doctor or so thinks.