mother 53yrs suffering from sarcoidosis lungs.

my mother Ian 53 yrs of age. she has been detected with sarcoidosis lungs. from last one year she is on steroids. well there was improvement but as soon as medication is decreased her problem was back to same.
we can see some side effects like increase in weight from 60 to 74 kgs. she is on regular walks and exercise.
her bones are becoming weak as she feels pain in joins and problem in climbing stairs.

please help me…