Need help lowering my blood sugar below 275 (Diabetic no meds)

My doctor has been on leave and my hospital won’t give me my meds. I was looking online but there’s NO information besides small snippets of stuff from people that try to make you buy their books. I exercise everyday for around an hour, I eat lean meat and salads for my meals with fruit in between, and I drink water like crazy. I dont know if I’m checking at the wrong time or what, but my blood sugar won’t go below 275. I do have some Metformin left, and I’m taking some diabetic multivitamins. I’m at a lost because It seems like I’m doing all the right stuff, I need help!

PS: My Doctor is not here and I’m in the military.