Food Diary Consultation: Facial redness after eating, what should I record?

I would like to know how to fill out a food diary to prepare for a consultation. Since my face turns red after eating, I am wondering what details I should record before my visit to help explain the situation. Would it be acceptable to record the type and amount of food consumed, the time of the meal, when the redness started, and the time it took for it to subside in the food diary?

I am also wondering how long I should record my observations to see if there are differences depending on the situation when eating the same food. I would like to know if there are any materials, such as photos or food records, that would be helpful for the consultation if prepared in advance of the visit, and if there are any other points to record besides food.

I would like to receive a consultation based on actual records rather than prematurely assuming the cause. Please advise on whether skin condition or dietary diaries are checked first during the consultation, and also recommend any points I should not miss when organizing my questions before the visit. Thank you. do.