First off I completely feel for what your going through and know it's unbearable. Please go to Yahoo news group under K9kidney and the people there will help you. They have a vast amount of information and require you to post your pups blood and urine results. I wish I had some advance notice on Timbers kidneys failing cause I feel that with the help of all the people at
K9kidney I could have had more time with my 2yr old Timber. Unfortunatley Timber hid her disease well and when I picked up it was too late. I had Timber at the vet for 2 weeks on IV drip and a vast amout of meds were given but I knew I was only prolonging her pain and knew that no amount of love or money (vet bill) was going to make her better. It was by far the hardest decision I have ever made but I know that I left no stone unturned.
Is your pup eating? that is always a good sign of how your dog is feeling.

I sincerely wish you and Pippin all the best with love and prayers