How is keeping a record of meal times helpful when your face turns red after eating?

I experience facial flushing after eating, so I would like to clarify the situation before the consultation. Would it be helpful to record the start and end times of the meal, along with the name of the food and the approximate amount, in my meal log? I am also wondering if it is acceptable to simply record what I remember for cases like eating out or snacks where I do not know the exact ingredients and quantities.

Would it be helpful for the consultation to record the onset of redness and the time it took to subside in the same memo, as well as compare the intervals between meals? If it is difficult to write in detail every time, I would like to know if it is acceptable to simply record certain items for now. I would like to receive a consultation based on the actual records rather than predetermining the cause. Please also let me know if there are any materials I should prepare in addition to the memo before my visit. Thank you. all.