Those second set of blooms falling off is usually due to a change in temperature or light.
Is it getting dry air blown on it from having your furnace on now? Did you move it? Is it getting enough water? They need more water when they’re blooming than when they’re not.
Just off top, those are usually the reasons for bud drop.
Mine has bloomed beautifully, but she needs a good clean-up, today to remove the spent blossoms and hopefully get some more blooms from those coming up behind. ;)
Thanks for the info. Should I snap off the spent blossoms immediately, or let them fall when completely dry? Should I try misting?