My son was born with RRP

My son was born with RRP. He has annual surgeries to remove the growths from his vocal chords. He has seen 2 different doctors for the surgeries. Cidofovir was used. Avastin was used. No injections have been used. The results and growth rate remains the same regardless. A microdibridor was used for the first few surgeries but now a laser is used to improve his voice quality. He got the HPV vaccine when he was 6 or 7. I have tried carbonol-3 therapy with him by juicing brocolli but it did not show any results. Doctors tell me there is nothing that can be done except the surgeries. I pray for a cure or remission for my son. He is now 8 years old.