Dietary Guidelines

I had an open incision nephroureterectomy (full removal of left kidney, ureter, adrenal gland, 38 nodes-1affected, and bladder cuff) the eek of Thanksgiving, 2014. Surgeon is 90% certain he got everything. Follow up ct scan was clean. I have been trying to find a dieticians guideline for eating but have had difficulty. I met with one twice now but I keep getting vague info. I exercised regularly and ate right before this happened to me so I have a good sense of proper nutrition, etc..., but I'm interested in specific foods to eat or avoid since I now have only one kidney. Any suggestions/links would be appreciated. God bless.