Yes, diet is important! I also have CKD 3 and Type 2 diabetes. I eat lots of greens. Salad for breakfast! Mostly, my protein comes from a little chicken and hard boiled eggs. Nuts are good snacks with reduced salt. Green tea for most hydration. I make a "peasant food" of cooked rice and black beans. Using spices including turmeric, onion, garlic, bone broth, and virgin olive oil can give it a nice taste. Stay away from sweets and alcohol. Exercise is vital. Check Dr Attia's book and his podcast. Living a healthy life can be a challenge. Are you up for a challenge?