I am sad to hear your story. My oncologist was the one who suggested looking outside for trials as his hospital didn’t have any suitable. I keep him updated on my progress and meet with him as needed for non-trial questions. There was no question of dropping me. I think it’s more important to find a trial than worry about keeping your oncologist. Good luck! My clinical trial PI, after 6 months, classified me as complete response and no evidence of cancer ( don’t know how long for but for now it’s great). I wish you the best.