FIP (Feline Infectious Peritonitis) treatment

Hello, my name is Emily and my kitten Toby has a virtually incurable disease. He is about 4 months old and I adopted him 1 month ago. He has wet FIP which includes thick yellow fluid forming in the belly and chest. The treatment that exists is $2,224 and unfortunately, that is too expensive for me to pay for on my own. He is a beautiful kitten that loves cuddles and would be the 3rd cat we would lose. I love him so so much and would really appreciate the help. This condition is rapid and starting treatment as soon as possible could save his life. We rescued him from a shelter and he deserves a long life with me.