Hello, My father-in-Law is 66 years old and he has type2 diabetes from 5+ years. His fasting sugar level was usually 300+ and he was on medication and not on insulin. Last month he got infected with corona virus. He is doing okay now but his sugar level pattern seems to have changed. Fasting is in the range 110-120 and sometimes after food is in the range 60-70.. could you please tell if this is something to be worried.