Whether you cook each night or once per week, have all your meals ready in advance so you can pack a coolbox and head off for your daily journey. You must never miss meals, because you body needs a constant supply of nutrients to support recovery and growth. Generally, you need 1.5 grams of protein per pound of bodyweight and for carbohydrates you should start between 2 and 2.5 grams, but over a period of time this can be increased to 4g, depending on your fat gain and how you respond to the increase in your calories. Also ensure you are drinking adequate amounts of water. Have these between meals, and not too much during as it can decrease hunger, causing you to eat less.