Is there a minimum distance I need to drill from the wall when drilling into the ceiling?
I have installed a bracket for ceiling mounted sheer curtains (<5kg). I used a Ramset Spring Toggle 3/16" X 50mm for the back end of the bracket as shown; above where the rod will go. Will the curtains stay up if I leave it with just one spring toggle per bracket across three brackets?
If not, what are some alternative options?
There is a metal stud/casing at the ceiling edge and moving the bracket back is not an ideal option due to space restrictions. There is also a 1.5cm gap between the ceiling and wall.

Thanks in advance!