Are you aware that correcting a higher blood glucose level like 10 mmol/L (180) will often require a more aggressive correction factor than it would at 8 mmol/L (144)? As blood sugar levels rise, insulin resistance usually follows. You may need to experiment to identify more aggressive corrections at higher glucose levels.
I’ve found that my sensitivity to insulin is not static but can go up and down influenced by food, exercise, and whether I get a good night’s sleep or not. I suggest that you keep a log of your corrections to help you discover what works best for you.