My husband has diabeties since 31/2 years, he has been taking medicne regularly. He is 54 years old, his height is 5'11".since last month he has not been checking his sugar level, he took his reading 2 days ago and it was 384, since then he was on a strict diet and start walking also, but sugar level is not going down, we have been checking his suger every couple of hours, what should we do to lower his suger. He does not excercise regularly.