Does increased GFR result in chronic kidney disease?

Hi doctor, I am 53 years old with a weight of 80 kilograms and a height of five feet seven inches. I have been athletic most of the time. But still, I gained some weight over the past few years. In these few years, I have done some general tests. Initially, my GFR was 73 at the age of 45. At the age of 51, it was 63 and now it is around 56. I am hypertensive. I have a cholesterol level of 168 mg/dL, LDL of 101 mg/dL, and HDL of 37 mg/dL. Even by doing exercise, I am unable to raise my HDL by more than 41 mg/dL. I am planning to do some tests after few days. I exercise normally. I have musculoskeletal issues in my knees and neck. Due to my job and sports activities, I got some wear on my skeletal system. I got kidney stones three to four years back. My urologist advised me to take more water and lower my salt intake. I am doing it. But I do not drink enough water and I drink three to four cups of coffee every day. I am concerned about my GFR. It seems like I have chronic kidney disease. I am planning to consult a doctor to know the causes of my high blood pressure. I am planning to lose around 10 to 15 lbs. Can I have a risk of developing kidney failure in the future? Can I have chronic kidney disease due to insufficient drinking of water with too much intake of coffee? What is the potential lifespan of a person having chronic kidney disease?