Best practices for scheduling standard change creations based on Patch Tuesday

Good afternoon! I've been tasked with coming up with a solution to automate the creation of standard changes for our maintenance of servers each month. Currently, they are working from a spreadsheet that runs a script and populates the dates for the next maintenance window. I'm needing to find a way to make this work in ServiceNow and take into consideration the variations on Patch Tuesday when they occur. I can utilize a flow to create the standard changes that have a maintenance schedule of a specific name, but I'm not sure that that is best practice. Thoughts? Pointers?