Sir, it is not Rajdhani, but a long distance prestigious SF express for home state. Present schedule is perfect for AP. No need of any changes. It just has to be maintained. As long as AP reaches BPL ontime or with minimal delay, it will be on its schedule in NCR and till NDLS.
Only after Indore VB came into picture, things turned little bad for AP because of obvious priority for VB. May be tripling of line in ghats in CR may help in avoiding overtake. Not sure about the tripling status between Nagpur and ET.