I had that thought but have not made my way back to make an update to the script. The method would be to write an initial line of code to set the first date, therefore overriding the method that says when the last time the script was run. This is the line that checks for it:

PropertiesService.getScriptProperties().getProperty(“lastUpdate”)

So in theory running this first:

PropertiesService.getScriptProperties().setProperty(“lastUpdate”, newTime)

Would set a specific time instead of getting “all”

I’ll try to write this into the script and re-share, but that should point in the right direction if you want to try to tackle it yourself.