Help Thunder get FIP treatment

Hi guys! 

My nieces and nephew adopted kittens who were siblings back in April of this year, they named them Taffy & Thunder. A little over a month after having them they realized Taffy had started moving very slowly and just wanted to sleep and cuddle and wasn’t very playful anymore then she stopped eating and drinking that’s  when they new something wasn’t right. They took her to the vet and had some blood work done and came back with saying she had what is called FIP Feline infectious peritonitis and she endedup passing away within a few days after being diagnosed. Now fast forward a few months and turns out Thunder had the odds stacked against him because their litter had it in their blood.  He’s now acting the same way Taffy did and after spending 1000+ dollars he was diagnosed with FIP as well the vet said since it was caught sooner than later it is curable with a treatment that costs $2500 so we need some help because with all that the kids have gone through this year and losing one of their beloved kittens, I would hate for them to lose another one. They love Thundy so much! Anything at all helps. Thanks so much for taking the time to read this.