Please Help, Feline Hemolytic Anemia Options

[HeatherE]

Hello,
My name is Heather and I have a 2 year old kitty, Helix. From 6 months of age he has been struggling with asthma, which we have maintained using a steroid, Prednisone. Last Friday 6/30, he took a sudden turn and fell extremely ill. The vet couldn't even get enough blood for a panel to test. He was diagnosed with autoimmune hemolytic anemia based on his symptoms and a low PVC (14%). We were told he wouldn't make it through the night. Five days later he is still here. He is eating drinking and using bathroom on his own, but we are still battling his severe anemia. He is on antibiotics just in case it was an infection that caused it and on a higher dose of steroid. I am begging for any advice, any insight, anything really about what to do. We have been feeding him liver and bone marrow stock. What else can we do? Please help me get my best friend back to me!