As Ken said, discuss with your doctor before changing anything, but a full record of all your blood tests/symptoms will help your doctor decide. Be sure to test if you feel you may be hypo. Some after-meal readings would be useful too. As you say, your BP may come down by itself - episodes of dizziness/lightheadedness may be a clue that your BP is dropping too low, so if this happens, mention it to your doctor. Your statin is unlikely to be reduced as it doesn't just relate to your cholesterol level, it has other benefits like reducing inflammation in the arteries, hence often prescribed to diabetics with normal cholesterol levels.