Help Elvis

This is Elvis from Estonia. He is 9 months old Maine Coon kitten. A week ago Elvis was diagnosed with dry FIP with ocular and neuro symptoms. He has lost weight,now he is only 2.6kg, He walks poorly and he has uveitis. He still has the appetite and he drinks water and uses litterbox, but he is sleeping almost all the time and not playing anymore. He is my cats baby and i am trying to help him

.FIP treatment is very expensive and without treatment it will be fatal. We started treatment but we don't have the opportunity to buy as much medicine as needed. Elvis is our second cat with FIP

Ivory is healthy now but her treatment was very expensive and we are running out of money.

We wouldn't want to ask for help but he is our baby and we want to help him.

Her His owners are 2 little girls who are very sad and do not want to lose their friend they are very much waiting for him at home

More information about FIP:
https://en.wikipedia.org/wiki/Feline_infectious_peritonitis

We appreciate any help and we really want to save our baby . Thank you in advance!