Type 1 here. I also agree. With comment above. I have two thoughts that may be valuable for you.
1) You can do an extended pre-bolus before you eat. This gives you a chance the cancel the remaining insulin dose if you learn your meal will change for any reason n-minutes before or during your meal. Maybe the meal unexpectedly tastes bad, you can cancel the remaining insulin. Maybe the restaurant tells you they are out of the dish you order n-minutes ago. This is called different names in various insulin pumps; Extended bolus, temp basal, etc.
2) Pre-bolus and eat AFTER you see your blood glucose decrease for 3-4 readings. Pre-bolusing for static time like 15 minutes before eating does not work consistently because there are lots of variables at play before you eat that directly affect (a) insulin sensitivity and (b) blood glucose. (Environmental temperature, insulin temperature, injection site, adrenaline, stress, pain, previous meals, lipid levels, exercise, medications, illness, to name a few).
Eating after I see my BG decrease for at least three consecutive readings has helped me stay in range (70-140) for 95-100% of the time and maintain a healthy A1C (less than 5).
1) You can do an extended pre-bolus before you eat. This gives you a chance the cancel the remaining insulin dose if you learn your meal will change for any reason n-minutes before or during your meal. Maybe the meal unexpectedly tastes bad, you can cancel the remaining insulin. Maybe the restaurant tells you they are out of the dish you order n-minutes ago. This is called different names in various insulin pumps; Extended bolus, temp basal, etc.
2) Pre-bolus and eat AFTER you see your blood glucose decrease for 3-4 readings. Pre-bolusing for static time like 15 minutes before eating does not work consistently because there are lots of variables at play before you eat that directly affect (a) insulin sensitivity and (b) blood glucose. (Environmental temperature, insulin temperature, injection site, adrenaline, stress, pain, previous meals, lipid levels, exercise, medications, illness, to name a few).
Eating after I see my BG decrease for at least three consecutive readings has helped me stay in range (70-140) for 95-100% of the time and maintain a healthy A1C (less than 5).
Cheers!