My son is three and a half. Every night he wakes up around midnight crying. He straightens his limbs stiff, arches his back and just whines. There is no consoling him. Sometimes he passes gas and seems to settle so I think it may be gas pains. He is a very picky eater and doesnt eat meat or veggies. He loves bread, fruit and cheese. He drinks a lot juice diluted with water. is there anything I can change that will help... His mood is affected by his lack of sleep!