Hummus would be fine for day 2 of eating or perhaps even the evening of day 1 but not for your first meal or two.
Your body will guide you here too. Your body will want things that are very easy to digest at first.
Disclaimer: The Gabriel Method is not intended to treat, cure, or prevent any disease or illness. This information is intended for educational purposes only, not as medical advice. Always check with your doctor before changing your diet, eating, or health program.