I think interview is going to take time. First, they will complete OG-1 interviews. Then they will start OG-2 interviews from Karachi, then Islamabad and then Lahore. It might as well take 2 more months for interviews to start for Punjab candidates. Candidates in Sindh should be prepared because interviews always start from Karachi. I went through SBOT-2016 process and it was a long wait. Result came 4-5 months after the result declaration, interviews started right after the written result for Karachi candidates but still took 2 months to start for Punjab and a little less for Islamabad. Dont remember exactly if there were interviews at Peshawar and Quetta as well.

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