Should I be concerned with the outcome of my FUE transplant? Should I start planning for a second procedure? (Photo)

I had an fue procedure 6 months ago, of 2000 grafts around hairline. I was told that results take up to 12 months but to expect noticeable improvement after 6 months. I’m concerned because I don’t see a noticeable difference from 3 months to 6 months and little to no density. The doctor said to be patient but I’m not sure he really looked at the photos. Should I start planning for a second procedure?