Yes, it seems like any newly growth hairs that may have shed are probably being shed faster in response to the benefits of minoxidil and making room for possible better caliber hairs to start growing. Possibly the miniaturization process in reverse.
How often do you microneedle for, once weekly?
Definitely a much better change compared to your pre op photos, hopefully you experience another sprout/growth or thickening of any fine hairs in the lacking areas, but overall it’s definitely made you look a proper age rather than 10-15 years older like in the before photos.
Progress looks good and your donor area looks really good.
I too, also noticed that at the beginning of of the month (every few months) I felt and saw new hairs had sprouted and then just growth of those the rest of the months.