@grrranny I have 51 years experience with diabetes. I have gone from Type 1, to a pancreas transplant, to Type 2. I am currently using a continual glucose monitor and an insulin pump. Before that I used Humalog and Lantus pens. I was doing about 12 finger sticks a day and what was called MDI (multiple daily injections). This was so that my Dr. and I could figure out a pattern of insulin needs throughout the day. For awhile I ate the same things and quantities so we had a consistent picture (boring!). We determined my basal insulin needs and established the Lantus dose. We figured out how much mealtime bolus was needed. It came down to an insulin : carbohydrates ratio. I think this is what @celia16 is referring to. It can be tricky at first to get the hang of but once you get used to it you can customize your Humalog mealtime dose to exactly what you need. You add up the grams of carbohydrate and do the math ratio for your dose. There were similar equations to calculate a correction bolus to deal with high blood sugar and also to get the appropriate amount of carbohydrate to raise low blood sugar without overtreating & inevitably spiking the blood sugar. What I have found is that there is no such thing as “one size fits all”. The more you and your provider can customize your treatment, the better. Have you thought of a CGM? It is very useful in conjunction with a pump. Otherwise Humalog and Lantus are great.