An 82-year-old male patient with FBG - 312, PPBG - 422. Not taking any antidiabetic medication, serum urea - 84, creatinine - 2.4, presented with lethargy. On examination, BP - 160/90.

Patient presently was on Telmisartan 40 and Prazosin 5. What should be the management of this case?