I don't think drinking juice after 2 would affect your results. That is more to keep you from getting sick on the oil. It probably means your stones are deeper in your liver. Try a couple of more flushes before you give up. I would wait at least a week before trying again unless you are feeling ill. Why not try an apple juice or apple and juice fast for three to five days before your next flush? I have had some great flushes after MC, but I always drink apple juice for a few days before flushing.
BTW- I am thinking about doing another flush tomorrow night. I did the full moon flush, but I have had right side pain and white stools since then, so I'm thinking there may be a stuck stone. Even when you've been flushing a long time, unexpected things can happen.
Good luck, and please don't give up.