Stroke , High Blood Sugar Level. Me!

My father who is diabetic for 5-6 years now, had a stroke on 17th may in evening around 5-5:30 PM. He missed the golden hours treatment. He was taken to a nearby heart and diabetes specialist hospital next day early morning where  the treatment process was started. After the initial treatment, we decided to take him in a big hospital so we went to AIIMS Jodhpur and admitted him in emergency. Now after the treatment and CT scan reports, they discharged him. Now the problem is, LEFT part of the body is not working properly and my father is facing difficulty in walking, speaking, and moving his fingers. Today morning, the blood glucose level was also above 300 unit (without eating). So doctor changed his regular diabetes medicine from Metformin hydrochloride to Voglibose and Vidagliptin. Initially his BP was also high after the stroke but since yesterday it is in normal range. His triglyceride level (lipid profile) is also very high (860). Plz guide me regarding this issue ASAP.