Staph infection peritonitis

I am going to have another surgery to replace my PD Catheter. My doctor is thinking my Peritonitis staph infection is in the PD line
I am so frustrated because I am finally healing the pain has been terrible since end of May 2024 doing antibiotics in my belly every 5 days then repeating cultures keeps coming back positive
RN is pulling the cultures from PD fluid in the office it’s not me doing it
Does anyone have any suggestions for antibiotics so I don’t have to have it replaced or do you agree it needs replaced HELP