Urgent help Pls. My kitten was dignosed with wet FIP

Hello, I need your urgent help pls. my rescued 5month kitten was diagnosed with wet FIP. I took her to 3 vets till now and they suspect its FIP, as she has very swollen abdomen.. its been more than 2 weeks now. my kitten is eating "feeding her Applaws food", not interested in drinking, alret & looking for love and my company. her problem started after sometime from completing her antifungal treatment for ring worms, she had flu but I didn't gave her the complete antibiotic, and then her abdomen became swollen and her backbone is showing.. the problem is once the vet suspected FIP, they gave up on her and gave her antibiotic and prednisolone, the third vet asked me to stop the prednisolone immediately and he gave her strong anti biotic for 10 days, that was before 3 days.. currently she has the swollen abdomen, diahrea which increased after anti biotic, and not interested in drinking.. im giving her probiotics paste..after searching and reading about homoepathy I am seeing a one but specialized in human, I show her the researches and kitten symptoms, she gave her China12 for two days, but today she asked me to give her lycopodium 200, 2 pills dilluted in water twice daily. pls advise me urgently what shall I do?? Is lycopodium suitable for my kitten? anything else she needs to take? the dose is enough? what about her swollen abdomen? and she is not drinking?!! appreciate your kind help and reponse. thank you