There is quite a variety on recovery times among kidney donors. Some bounce back very quickly, while others have a longer recovery, or even complications. 3 months, I think, is reasonable to hope for, but it is wise to have plans in place IF more time is needed.
These days many more donors check in at the FaceBook page of "living Donors on Line" and "Living kidney donors support group". If you post there also you may get more responses than here.
Fr. Pat (donor at age 56, 18 years ago)