Every response you get is going to be wrong and some of them might be right...
Ultimately the best supplementation schedule involves no supplements at all but lots of natural sunlight and a varied and well gutloaded feeder regime. This is very difficult and not even possible for many depending on where you live.
I don't keep panthers but many do and will be able to give good schedules, keep in mind though there is no substitute for watching closely and modifying supplements accordingly no matter what schedule you settle on.