Fresh Juices are considered the ideal if genuine hunger has not returned (majority of cases). Digestion needs to be renurtured back into full activity when natural hunger has not returned, and this takes about one week after a 30 day fast. Coconut water is fine.
To avoid regaining excess weight post-fast, there is a way of eating (not a diet) that allows you to eat as much as you like, and still achieve and maintain an ideal weight for your frame. It is known as being a "Nutritarian"