Shedding 3 weeks into fin/minox, normal?

[Fortunate Son]

Hey guys,

I started 1mg EOD fin and twice a day minoxidil 3 weeks ago. Around the 2-week mark it seemed like I was losing almost 50% less hairs in the shower (25-30 instead of 50-75) so I reckoned it must be working, but now at the 3-week mark I noticed I'm losing more hairs when I brush it at night and in the morning before I shower (around 25), and I'm back up to losing 50+ in the shower every day.

I know shedding is usually a good sign, but isn't 3 weeks a bit late? The Rogaine website said it should occur during the first two weeks typically. Anyone else had an experience like this? It's a little unnerving...

Thanks