Q.phalaenopsis orchid blooms
My phalaenopsis orchid is blooming. I has 8 buds, the first three have opened, but the first two are already drying out. Is there a way to keep the blooms from drying out until all the buds are open?

There is no way to really judge how long the flowers will last. The environment can effect the bloom time. Correct sunlight, temperature and humidity will help optimize the blooms times.
https://www.gardeningknowhow.com/ornamental/flowers/orchids/indoor-orchid-care.htm
https://www.gardeningknowhow.com/ornamental/flowers/orchids/orchid-care-after-blooms-drop.htm