Chemo combination drug not available on NHS

Hi my name is Paul and I’m fundraising for a drug to use instead of steroids to use alongside my chemotherapy which I start next week. I may require up to six cycles but am still waiting on a price from the hospital they think it will be around 3000+ per cycle. I was diagnosed in March 23 with a brain tumour and had an operation to remove 95% of it in April. I’ve undergone 6 cycles of tmz chemo and 30 days of radio but my tumour has returned and I can’t have another op due to location and how it’s growing. If i can get this other drug it

will help me with weight loss and mobility and hopefully sleep at night