Henry Needs a Lifesaving Transfusion

Hello I'm writing this today for desperate help for my loving little boy. This is Henry he is not even 2 years old and needs emergancy medical care. He drastically lost weight recently so I took him to the vet and his white blood cells are non existent. His levels should be 30-40 and they're at 7. My vet is surprised he is still walking around being playful. He needs a blood transfusion and I called around and got quotes of up to 3k and I can not afford that at this time. I talked to my vet and she said we can try steroids and pray it's an immune issue and hopefully next week by checking his blood again the numbers go up if they don't they said the next step would be quality of life and euthanasia if I can't do a transfusion. I mentioned about surrendering him to a place that can help him but I would lose him either way. I adopted him and his sister a year and a half ago from a hoarder situation and they're my babies. I cant imagine my life without him. I got denied for care credit and fetch already. Anything could help I don't want to say goodbye either way to him. He is the most sweetest boy and only wants love. Thank you for taking the time to read this.