Hi! I am a type 1 diabetic. I personally use insulin infusions through a pump (I need insulin to stay alive) exercise, and a reduced-carb diet (about 150g net per day) to keep my A1C within desirable ranges.
First off, like what the others have said, have you made an appointment with a certified diabetes educator and a registered dietician? The CDE and RD should be able to give you guidelines on how you should approach meal planning. Off the top of my head, the American Diabetes Association recommends keeping net carbohydrates (total carbs - dietary fiber - sugar alcohols = net carbs) to around 45-60g and snacks to around 15-20g, though you might notice that you need to eat more/fewer carbohydrates.
In order to determine this, I recommend getting a blood glucose meter (Walmart's ReliOn brand has one for under $20 and 50ct test strips for about $10. It's the cheapest meter I have found) and using it to determine how much your blood glucose "spikes" with each meal. You typically will need to test before eating, record your number and how many grams of carbs you are consuming, and then test 1-2 hours after eating (most doctors recommend keeping your post-meal spikes to less than 140-180). If you notice that, for instance, your BG easily shoots up into the 200s after eating any meal that contains 40g, you might try reducing your net carbs per meal to 30g and seeing how that will affect the post-meal spike. On the other hand, if you're staying below 140 after eating a meal, you might be able to consume more carbohydrates per meal.
I also noticed that exercise helps a lot in increasing my sensitivity to insulin. It might be a good idea to find an exercise routine that you like, even if it's something like a fifteen minute walk around the neighborhood.