Am I making progress or convincing myself?

[Kieran2015]

So I've been on finasteride 1mg for 6 months now and I'm not sure if I'm making progress or not. At the moment I feel like it's getting gradually thinner but just at a slower rate but when I look after the before (pictures on the left) and after (on the right) I feel like it's maintaining what I have. Maybe even some regrowth on the hairline but I'm not sure if the hair that I have is just getting thinner rather than regrowing.