Kidney Related. According to my report?

When was the first time I took the test my creatinine was 1.2mg/dl. after 2 days when I took test creatinine was 1.5 and done with Ultrasound scanning its shows like 1.bilateral grade 1 renal parenchymal changes. and after one 15 days I have taken the test again and my creatinine is 1 mg/dl. when I check again after 15 days it's 1.2 mg/dl. After 10 days (Today) I have done the creatinine test again now my Value is 1.1 mg/dl . 1.My blood sugar is 74 mg/dl. 2.BLOOD PRESSURE 125/ 80( I feel little tension while taking the BP). What precautions do I need to take care of  how to increase my kidney health ? How to maintain my creatinine like this ? Are there any tests I need to do about my kidney health? Am I with CKD or not ? What diet do I need to follow? Can you please answer my questions according to my report?