As far as my understandign of the functioning of the Liver Flush ist, your flush will only work partially. You should not eat any fat during the day to build up bile in you rgallbladder. If you have eaten fat during the day, some bile has already been used on that fat, and the flow of bile after the OO/GF drink won't be that strong any more.
Don't be angry with yourself. You are not the frist and not the last flusher, who had to postpone a flulsh, because he/she forgot about this rule ;-))))).
Elisabeth