Hi - I have this issue where I need to search for a column in google sheets using Zapier. I have seen other posts that have solutions such as using a lookup table - however this would not suit my situation as I have 50+ columns that need to be searched for. Basically, it is a timetable and I am easily able to find the row for the timing, but the dates are in the columns. (excerpt of sheet below)

I can’t possibly create a new key-value pair in the lookup table every time a new week is appended to the sheet - so how can I search row 1 for the corresponding date column to write down a variable in that specific cell? ?I take my information from firestore - but I dont think that matters]