Sure, here is the meal plan as per your requirement:

**BREAKFAST**:

- Watermelon (154 grams):15 calories
- Pears (78 grams): 41 calories
- Melon (46 grams): 9 calories

**Total Breakfast Calories:** 65 calories

Please note that it is quite challenging to match exactly 60 calories. In the given plan, it's a bit over. This can be adjusted by reducing the portion size slightly for any of the food items to match closer to the 60-calorie target.

**Nutritional Breakdown:**

- Fat: The combined fat content of watermelon, melon, and pears is insignificant, making the percentage to around 5% of total calories.
- Carbohydrates: Watermelon, melon, and pears combined have roughly 16 grams of carbohydrates, which accounts for about 70% of the total calories.
- Protein: The combined protein content is roughly 1.5 grams, translating to around 25% of the total calories.

This specialized meal plan ensures that the set standards are met while taking into consideration the nutritional value of each food to ensure the body's health and well-being. The plan can further be fine-tuned to ensure optimum satisfaction while strictly adhering to the calorie limit.