If I'm honest, I'm notorious for snacking and eating more than 5-6 small meals a day - which my consultant gave me the stern talk about the overlap of insulin. Since you're in the early days, ask to see a dietitian and as time goes on and when you have more experience, ask about a carb counting course for dose adjustments. So it's the idea of injecting insulin for carbs contained in some foods, for snacks, it's like pay as you go. You could consider some low carb snacks like nuts, chicken, veggie sticks and hummus, cheeses, some berries and plain yogurt etc until you have got to grips with diabetes. So it doesn't give you a significant rise, especially with your whole ordeal at the hospital. I tend to find if you up your protein intake for meals, you'd be less likely to snack. Of course if we go long periods in between meals, it can warrant a snack.