Help Broc the Doberman get treatment.

Hi,I have a Doberman who is 3 nearly 4. Since Thursday he went off his food and didn’t do anything he enjoyed anymore. We took him to the pdsa and they gave me a anti sickness jab and asked us to come back the following day if he was the same. Friday we took him back and they kept him in on fluids for the following two nights. They rang us up on Saturday night to tell us his kidney were still off the scales and suffering with acute kidney failure and that we should pick him say our goodbyes and put him to sleep. As dog lovers we just couldn’t do this without giving him a second chance. After seeking some advice on a Doberman page with many knowledgeable people who have been through the same we have been advised to go to a specialist now with this it can go into thousands and we just don’t have that sort off money but we love our boy the world. So I’m asking if anyone could help us try to give our boy the best fighting chance off beating this. Even if it’s a few pounds it will all go towards his fight. Thankyou so much for taking the time to read his story❤️