Welcome to the Make community!
You can have a scenario watch new items and schedule a cron job callback using apps like 0CodeKit that allows you to schedule a “callback” to a URL defined in a “Custom Webhook” trigger in another scenario at the exact time you want
You don’t have to use a data store, this is just an example. You can use Google Sheets, Google Calendar, etc.
Alternatively, if you are already using Airtable, you can use an Airtable formula and built-in automation, briefly mentioned here.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Investing some effort into the Make Academy will save you lots of time and frustration using Make.