> go make a nuisance of yourself being present

I was hospitalised (not cancer) and completely zoinked out of my mind due to sleep deprivation, constant blood loss and being in pain 24/7. People did visit, but I guess they just thought... I have things under control? I wish they had talked to the doctors and asked more questions. In the end I came out of it fine, but I probably would have gotten a better result with someone advocating for me.

Please go and be a nuisance. As someone with a clear head you will likely be able to understand the topic better, from a more neutral standpoint, and potentially push for the best possible treatment.