What to inspect
Check plant maturity, distance from the window, seasonal light, internode length, and whether aerial roots can attach to stable support.
Choose one evidence-based action
Improve light gradually and provide support. Do not cut healthy leaves or overfertilize to force fenestration.
What not to do
Do not diagnose leaves without fenestrations from one mark, change several major conditions at once, or use an unlabeled treatment. Old damage may remain after the cause is corrected.
Review the outcome
Photograph the same area under similar light, record the date and intervention, then compare the boundary of damage and the quality of new growth. Escalate rapid decline or safety concerns to an appropriate professional.