No! First, see a nutritionist and get to work, After Stage 3 comes Stage 4 where you are moving toward dialysis. I think this is insane that Kidney Docs tell you to not do anything in Stage 3.
I read everything, purchased the book by Shelley Manning, another by Robert Galarowicz, read Duncan and Fiona, and I study diet and nutrition sites.
I had to fight to see the nutritionist and in the end, I have done it all myself. Diet, mild, not strenuous exercise (30 minutes a day - walking), and huge changes in my diet.
I have been a vegetarian for 20 years so that part was already in place. I AM IN SHOCK THAT THE DOCTORS TELL US THAT SINCE WE ARE 'ONLY IN STAGE 3' we do not have to do anything. Two nephrologists told me that.
In my case, I figure that because CKD is slow-moving, and I am older, they figure I will die of something else first.
I was diagnosed by my cardiologist. When my Blood pressure was too high .
He held his hand on head when he saw it was stage 3 . What a contrast !!!!!!!