As fruit of life said the only danger is under eating especially when first beginning this lifestyle as it will lead to falling off the rails. Bananas are king they are full of fibre to fill you and sugar for these sweet cravings. Have a 10-15 banana smoothie for breakfast that will give you a good base to work from. It's best to start getting in the calories early so have breakfast early. Then basically eat every 3-4 and eat until you feel like your just about to vomit or can't eat anymore. Don't tell yourself your bloated on 2 bananas because you won't be. So carry on eating 10+ bananas or equal calories of other fruit for lunch. Bananas or dates are best staples because they are more calorie dense and give you a better idea of the calories your getting. Then same for dinner or cooked starches. Aim for all your meals to be over 1000 cals and your on to a winner! But never never go hungry to bed.
Hope that helps,
Welcome to 30 BAD Katie (that's my daughters name too).
Eat as much sweet ripe fruit as you can for breakfast, lunch and dinner (with lettuce is the ideal) or have cooked at night. Have you come across cronometer yet? I found it very helpful and will put your mind at rest as to whether you are getting enough calories. (cronometer.com)