Some of them bloom and the flowers last quite a while (say 2 months or more) while others last only 20-30 days. They begin to wilt one at a time then fall off of the stem. Some of the stems will start to shoot out new buds just before the old flowers fall off, but if not, I just cut the old flower stem off about 1" or 3-4cm from where it pokes through the leaves.
This post may help .. https://peakd.com/hive-114105/@bdmillergallery/time-for-another-orchid-update
Oh that orchid of yours had a bloom for 3 months, fantastic! I have read the post, good tips, they are not hard maintenance, thank you!