Please help Piu and Mona survive

I am rescuing cats in Estonia and have a little shelter (100 cats). Almost every cat owner or recuer knows, that at least 70% of cats had coronavirus in some point of their lives. And that in 5-10% cats it can develope FIP. That cruel and fatal disease! Fortunately nowadays there is a medicine, that can help! But it costs so much money 😞 Last year I treated kitten Mimi, who had wet FIP and recovered. Now I have a 1-year old Piu, who has dry FIP and we are on day 56/84 now. Unfortunately one 2-year old cat Mona got sick too, she had fluid in her lungs and she was so anemic, that i was so scared of losing her. Although all the answers were negative, I started FIP treatment, when there was no hope anymore. After few days she started to look better and her breathing was not so fast. After 10 ten days of treatment, she did not have any fluids and she was not so anemic. It was a miracle! Now we are on day 14/84. But my problem is, that I dont have enough money to treat them. Cats in shelter need everyday food and often we have to visit hospitals. Some of them are old and they have all kind of health problems. So I am asking for help! Please help me to buy a medicine for Piu and Mona. They are fighting, so please help me to fight with them 🙏