It is early days so don't try to run before you can walk.
If your BG is high and you are limiting your carb in take, it sounds to me as if your insulin dose is too low at the moment. I suggest talking to your health care team for advice.
Some people with type 1 eat a low carb diet. However, this is not true for everyone so it is difficult to advice how many carbs you should eat per meal. But, for now, if you want to maintain a low carb diet, typical low carb snacks are things like cheese, nuts, pork scratchings and egg based meals (I prepare egg muffins - there are lots of different recipes to google - and heat them up in the microwave later).