My husband is 7 months post-transplant. He has Iga and received a live donation from his sister. We see his creatinine and GFR bounce all around. He keeps a daily journal recording what he has eaten, exercises, water intake, etc. We notice that protein intake along with exercise seem to have a huge impact on these labs. Weeks that he eats more animal-based proteins vs plant proteins seem to see the highest upticks. Weeks where he does more weight lifting than cardio also see this trend. In addition, in weeks where his Tac/Envarsis lab is higher, creatinine goes up and GFR goes down. Around the same readings as your husband. The transplant team is not too concerned and has indicated he should just keep doing what he is doing. I mean, everyone is different so normal for one may not be normal for another, but all has been well. I just wanted to share our insights that were gleaned from my husband's diligent recording. We were able to draw some direct parallels. I hope this is helpful.