Can you help me think through how to set up an excel spreadsheet to create some graphs?

I haven’t been feeling well on and off for over a year now. I want to start keeping a food diary and some other measures to see if I find a pattern.

Ideally, I’d like to be able to superimpose two graphs on one. Like make my BP one line and my sodium intake another. See if there is a correlation.

I’m just trying to think through how to number the X and Y axis? If I want the X axis to be the date and I eat three times a day, how would I number that?

I might have multiple graphs and line them up.

The main things I’ll be tracking are: if I feel nauseas, if I have discomfort in my upper abdomen (not nausea, more like a knot), when I ate, my BP, fluid intake, sodium intake.

Any ideas I appreciate it.