Organization and planning are key elements to successful nutrition and supplementation. If you establish an eating schedule it is easier to make sure you are meeting your nutritional demands. If you wake up and have no idea of what you are going to eat throughout the day, you will have a much harder time meeting you needs. Also, people have lives and can’t have access to a kitchen at all times. This means that you may need to have food available when you are away from the house for an extended period of time. This requires advanced planning.
I would suggest setting a schedule that allows you to eat 5 or 6 smaller meals throughout the day. Spread them out so you are eating every 3 hours. If this is a drastic change in your eating habits, give yourself a chance to ease into it. Don’t try to totally change your diet 180° overnight. Do it over the span of a couple of weeks.
Make each meal consist of a protein source balanced with some carbohydrates. It is important to measure out your carbohydrate servings. Over measuring can allow calories to add up fast. This is not good if you are trying to lose fat.
You need to eat fewer calories than you expend. Just because you are eating clean, low-fat foods doesn’t mean they can’t cause you to gain fat if eaten in abundance. Excess calories, no matter where they are coming from, can lead to fat gain.