Sounds like you're doing fantastic. Had 4 surgeries so far and each had a different recovery. Don't over do it because it may hurt less and ease back into walking. Wouldn't of believed just walking really helps but it did for me at least. Had a hard time just walking to the mail box and back before I got my L4/5-S1 fused. 8 days out and I was doing the 90 year old man shuffle 1/4 mile every day and eventually worked it up to 4. I still regularly walk and will kick it up a bit when my back acts up. There's PT which you should do, but also found occupational therapy to help a great deal. I was regularly aggravating my back which would act up later and didn't even know why and other times I knew exactly what I had done.