Is it normal for gums to grow back as they were before a crown lengthening? (photo)

I had a crown lengthening procedure done to reduce my gummy smile. Right after the procedure, I loved the results. Then things became puffy. I thought it would shrink down, but it has been 12 days and I feel most of the gum has grown back to look like my smile before the procedure. I have stitches still so I was told I can gently brush right up to the gum but be careful. Other than that, I'm not sure if I'm taking care of it correctly. However, I'm unhappy with the results.