So sorry. I went through this with Pixie and my mom is going through this right now with her dog. There's a lot to it and treatment can vary based on how elevated the levels are in the blood work. I would recommend seeing a kidney specialist if you can find one, or an internal medicine specialist, as soon as possible. A diet change with high quality protein is usually the first thing they recommend, as well as switching current medications to medicines less harmful to the kidneys. If phosphorus levels are high, they may recommend a phosphorus binder. Subcutaneous fluids are something that may provide relief, and you can administer yourself. Otherwise IV fluids will need to be administered when the BUN level is elevated. Do your research, as there's a lot to it. There is a k9kidneys group on Yahoo that may be helpful and many articles online. I'm sure others will chime in more in depth.