Leaves falling from indoor Hibiscus, why.
Certified GKH Gardening Expert
This is completely normal! When you bring them indoors, the dry air, or lack of humidity, tells them to go into a semi dormant state. As long as you care for them as normal, and put them outside when they are safe to go back out, then it will recover. Do not trim the plant until right before you put it back out in spring, though.