Hello Melissa,
Welcome to the club and I hope you will gain both new friends and more diabetes info from this excellent site.
I see you have been T1 for 16 years and I hope that you have managed to keep good control and so no complications. In my experience it is all down to becoming knowledgeable about all aspects of diabetes, and in particular by doing carb counting & bolus dose adjustment., plus recording and reviewing in detail.
In the UK many areas of the NHS (National Health Service) offer a structured education course called DAFNE, which stands for Dose Adjustment For Normal Eating, and is normally a 5 day 'classroom' course with other attendees. The main emphasis is on how to count carbs, work out the insulin-to-carb ratio for each meal, and inject the correct amount of fast acting bolus to cover the meal carbs. Most T1s who have been on these courses say they were 'life changing', since they learnt so much that they were not aware of even being a T1 for 10 or 20 years. Do they run structured education course like this in US and if so have you been on one? Also do you carb count & bolus adjust?
I was dx with T1 46 years ago and so have a lot of experience and started on one Lente injection/day and now on MDI regime with no background basal (due to another immune disease affecting blood sugar) but just three Humalog, one for each meal. My control has been good with HbA1c no higher than about 7.5%, and now down to 6.5% after starting tighter control two years ago. I have no complications for which I am grateful.
Best wishes .. Jonty