I am unable to make a specific diagnosis of kidney disease based on the information that you present. There are many causes of chronic kidney disease (CKD). Treatment requires a specific diagnosis and then attempting to delay the progression of CKD. Steps you need to take include consulting with your physician about the cause of your CKD, keeping your blood pressure well controlled, follow a low salt DASH diet, control your diabetes (if you have diabetes), don’t smoke and exercise regularly to maintain a healthy body weight. You can review a DASH diet at: https://www.nhlbi.nih.gov/health-topics/dash-eating-plan
You should also avoid taking non-steroidal anti-inflammatory drugs (NSAID’s) including Motrin, Ibuprofen, Advil, Naprosyn, Naproxen and Aleve.