Just do two days of fasting, and eat normal meals the other days. It seemed like you were trying too hard. I will soon be fasting on Mondays and Thursdays. tomorrow I will have, for my fast day, baked Salmon and grilled vegetables. It will be a wonderful under 600 calorie meal. You need to find a plan you can live with. Remember, it is a marathon, not a sprint. Allow some flexibility. Don't be too strict with yourself.