Hullooooo 
If you just start by cutting out the grains, and replacing the calories with alternative carbs such as potatoes if yor not looking to lose fat, sweet potates, lots of veg and some fruit, than that's surly a change for the better without altering the amount of protien you are consuming. See how that goes and how you feel and how your doctor thinks you are doing then take if from there if you need to change anything.
Major respect for donating a kidey too
You know all those pictures of Adam and Eve where they have belly button? Think about it..................... take as long as you need........................