May I suggest you get a second expert medical opinion.
My
ex specialist kept recommending chemo for my leukaemia and I found out from someone else that this can now be treated with tablets. My new specialist says I do not need to start the tablets yet.
I do not know if your state has an equivalent but here you can invoke Ryans Rule which requires your treatment to be evaluated by a second independent person/group.
Ryan's Rule is a 3-step process that supports patients, families and carers to raise concerns if a patient’s health condition is getting worse or not improving as well as expected.