@roz27 Welcome to Mayo Clinic Connect.

Yes, it is possible to have your eGFR rebound back to more acceptable levels. But it takes a lot of work on your part, to be honest. You say your high blood pressure is more managed. It is not an instant reversal, and sometimes if the damage was done it may not be able to recover.

Good solid exercise, following a sound renal diet, taking the appropriate medications that your medical team suggests will help a lot. What is a good renal diet? Limiting salt, processed meats, phosphorous, potassium, calcium, NSAIDS [like Alleve], watching your protein intake. There are several helpful renal guidelines:
from the National Kidney Foundation: https://www.kidney.org/nutrition
from DaVita Kidney Care: https://davita.com/diet-nutrition/
Ginger

@roz27 I was in a similar situation as you. In 2005 I found out I had minimal - moderate kidney disease. It wasn’t called CKD and wasn’t given a stage #. In 2016 I learned about eGFR and mine would fluctuate between 14 - 44. There are so many variables that affect the GFR. Any one test isn’t very meaningful. The trend over time is more useful. At some point I got a nephrologist. He told me that I basically had stage 4 CKD. He put me on meds for blood pressure, referred me to a renal dietician to learn about helpful renal nutrition requirements and he monitors my kidney function labs. I see him twice a year for office visits alternated with visits to his nurse practitioner. @gingerw described great things to work on towards reversing CKD. These are the things I did. Now my nephrologist says that I am stage 3 CKD. My GFR is in the low 30’s. It does vary however. I recently had a lengthy visit to the ER for something seemingly unrelated. While there the GFR dipped to 27. So once you know you have CKD follow the suggestions listed here, get providers to help monitor & manage things and do the best you can and try not to stress over temporary variations.