is this rot?

it's not mushy, it's really dry actually and the black patches is kinda crispy.

i mist them until they get drippy every other day. am i overwatering them?

i live in the philippines and the humidy these days are around 75-85%. The windows in my room are always open and they are 1ft away from it.

how often should i water bulbosas?

are they gonna die? :(

is there some way i can save them?

thanks in advance

-paul