Where can I get Petrol at Midnight in Srisailam route?

I am traveling towards Achampet from Secunderabad today midnight. There has been an emergency and I have to leave from Secunderabad at around 2 AM. I have to fill Petrol in my Santro car. I know most of the Petrol Stations within the city will be closed at that time. Is there any place in my route I can fill petrol? Pls help guys. Thanks in Advance. 🙏🙏