Congratulations for having the determination to figure out how to use insulin to manage your blood sugars Note I didn't say "perfect" your blood sugars--they are fluid, affected by many things--including food, exercise, meds, stress.
Establish with your doc what your target range should be before meals, after meals. Get the A1C test regularly (which will tell you a rough average of bg levels over 2-3 months). Have those other very important health check-ups for eyes and see the dietitian. (PS: 12 grams carb per meal is very, very low. It also means you may not be getting enough fiber, which can help bg and insulin resistance, and too much fat, which worsens insulin resistance. In fact, that level of carbs is so low it may be adding to your sugar cravings.) See what the dietitian recommends in terms of overall calories and then decide on a meal plan you can live with every day. A meal plan may impose some restrictions, but it shouldn't be a punishment!
Although pumps are amazing because the amount of insulin can be finetuned (I need much more in the a.m. than I do in the p.m), they aren't automatic. In fact, the people who get the most benefit out of them have spent a lot of time perfecting their knowledge of food, their own body's reaction to eating, exercise, insulin, etc.
I think you are very smart to realize that it takes time to get diabetes management under (relative) control. Best wishes!