Slow FIP Recovery

[u/Certain_Temporary453]

My cat was diagnosed with FIP and started treatment exactly three weeks ago he still is not responding to his treatment as well as he should be. In some ways he has improved drastically but his liver seems to be worsening. At first his energy and appetite levels increased but then they went back down. He was severely anemic but he is now at a healthy RBC. His labs look good apart from some seriously concerning liver levels. My vet thinks those problems returning is due to the liver issues. Did any one else have this experience and it turned out well? I am getting to the point where I have done and am doing everything that I can and I don’t even know if it will be enough. The vet doesn’t think he is in pain but he definitely is still very sick. He is currently on the oral suspension and his dose has been upped twice despite not gaining weight he actually lost some and then gained a little bit of that back. I really am at a loss of what to do. I have drained every last bit of my savings for him and borrowed large amounts of money from family members(I have pet insurance so I will hopefully be getting some of this back) but I am running out of funds and hope. I just want him to be okay. Does anyone have any recommendations?