I’m not entirely sure of the science but it’s possible with different genetics that your beard may respond more to an elevated level of testosterone. And taking dht blockers increases test, only slightly though in your case. Or maybe the fluctuations of hormones did something to slightly increase beard hair count.
The point is, we have no idea. As long as you’re not having symptoms of more sebum, shedding and a notable diff in body hair, then stay the course and compare pics from baseline.