If you're serious about giving up caffeine this means no tea, coffee, chocolate or coca cola although as caffeine is a drug, if you stop your intake you are likely to experience withdrawal symptoms. On average it takes 4 days to come through the withdrawal, characterised by headaches and fatigue. If you have a very high intake it is best to reduce gradually, but as your intake is low you should be able to have a caffeine free week from today onwards.
Substitute your teas and coffees for caffeine free alternatives, such as Rooibos tea, Barleycup or Symington's dandelion coffee. Avoid all chocolate, including dark, and to satisfy a desire for sweets try a palmful of prunes or figs. If you experience any bouts of fatigue, drink water, herbal tea, or a green or white tea for a mini hit.