Bimbo against FIP

Hi,

My name is Bimbo and I am one and a half year old. Two months ago I was returned to the shelter because my previous owners found out that I have feline leukemia. Few weeks later I was adopted by my present owners which already adopted my sister (also FELV positive) when she was little. Everything was fine until I started heavy breathing. My owner took me to the vet and diagnosis was terrible. They said that I have deadly feline infectious peritonitis (FIP). I had fluid in my chest and high temperature. I was immediately admitted to the clinic and stayed there for two days. Now I am feeling a bit better. The only cure for FIP is extremely expensive. One bottle costs 53euros. Treatments lasts minimally 84 days in which I have to get the medicine every day.
But it's my only chance to stay alive so please help me!