Hi, I had gone through your query and understood your concerns.
Sir, maintaining strict diet and regular exercise is very much necessary in a diabetic along with medication. They help to keep sugar levels in control along with regular medication.
Now coming to your query, rarely sometimes sugar levels vary. But if the levels keep on being higher even with regular medication, we have to check
HbA1c also. if that shows higher level, then we need to improve the dose of medication. As you din't mention the dose here, Please visit a
diabetologist and have HbA1c checked and discuss regarding dosage increase if the level is higher.
Coming to second part of query, The levels which were quite under control start to rise with time, because the
insulin mechanism slowly tend to decrease. then we need to improve dosage of medication to get under control.
Hope this guide you. Thank you.