Early reversal with finasteride plus question (photo link)

Hey doc, I was hoping you might be able to give me some advice. I’m a 22 year old male. I noticed my hairline was starting to recede a couple months ago. I got prescribed 1mg of finasteride and have been taking half the dose daily since the start of October. As of 3 days ago, it looked like practically my entire hairline had grown back and I was so happy about it. A couple nights ago I looked in the mirror after a shower and saw that a bunch of the hair I had regained in the temples had shed. There’s still hair in the temples filling out my hairline but it’s thin hair. I think I remember reading that shed is maybe a good thing? Any advice?

Here’s pics of my progress: 1st pic is pre-fin. 2nd pic is 1 month on fin. 3rd pic is 2 months on fin. 4th pic is from a few days ago. https://imgur.com/a/HrXqv

Great pictures and good story. I would stick to the program and see what happens in time