Rohit you need to shut Normal SBI BPCL card and apply for Octane one. You can check on app if among the eligible cards being shown there to you if Octane care is there? If not, then simultaneously apply for octane. Once Octane is received, shut normal card.
Have been using Octane for an year or so. Gives good reward points on tank refuels via BPCL pumps. Additionally, look for Rupay card only. You can use UPI in that which will further increase your reward points bag.