Dog bladder cancer

I'm looking for some advise / guidance. My dog was recently diagnosed with bladder cancer after we found blood in his pee. I started him on the animal protocol according to Jim H book.
I am mixing 8 drops of 28% sodium chlorite and 8 drops of 50% citric acid waiting till it turns amber color and adding 1/2 cup water and only giving him 25ml for 8 hours in a row .( we worked up to the 25ml)
At this time we are seeing no blood or very little blood in his pee ( I thought was a win in my book! ) but he is now coughing hard after each dose.I took this as a sign to back the dose down but his still coughing and blood is showing up in his pee with the lower dose.(He is a 100 pound for reference)
My questions are am I mixing MMS correctly? Is these something different I should be doing to treat bladder cancer? Should I be mixing a bit of beef broth ? Less drops of 50% citric acid?

Anyone have experience treating bladder cancer in dogs?

Any recommendation you have are very appreciated I find the book a bit confusing regarding treating animals. 
 

It sounds like the coughing is a healing reaction.  I am experiencing this too...  I hope your dog is ok.  I just saw your post today.