Re-bloom after repotting mid-bloom

[Kmangardener]

I recently purchased two orchids from a local store that were blooming and immediately reported them into new medium (miracle gro orchid mix) in well ventilated orchid pots. I realized too late that this probably shocked them and caused the blooms to fall off quickly (within 2 weeks). From what I’ve read online, you shouldn’t repot in mid bloom. Questions for the group:

1. Now that the blooms have fallen, should I cut the spike to the nearest node to get it to rebloom or remove entirely? What are best practices for determining whether I can get the plant to rebloom again this season, given that I may have shocked the root system already by repotting?

2. Next time I purchase a new orchid should I leave him in the (typically poor) medium they come with and wait until the blooms fall off before repotting?

Thanks!