Sonny's radiotherapy

Sonny blue is my life, my love, my world!
7 years ago i became very sick. He started to sleep with his head on my neck and wouldn't leave my side.  A year later i was diagnosed with stage 4 throat cancer. I went through chemo, radiotherapy and finally surgery removing my voice box. He was by my side through it all.  With out Sonny I wouldn't be here. Now my boy has a tumour in his nose and sinus. He's struggling to breath while we wait for an available date for radiotherapy. Yet again, the insurance company are refusing to pay out so i'm having to find £8,000- £10,000 to cover all the tests, scans and radiotherapy.
Sonny is my life. I wouldn't be here without him, so i'm going to do all i can to help him like he helped me. 
I'm asking for any help with the radiotherapy treatment which will amount to £6000 minimum. I have been told if he has the radiotherapy they fully expect a positive outcome so i have to make this happen for him.  Any help towards the costs would mean the world to me as it will be a step towards helping Sonny.