Stagger scheduled updates on WEB csv data refresh

Thanks but I feel like we are talking about two separate things here:

In the blog post you have, you are using a custom function to stagger the number of requests to the same API, in the same function, on the same table.

My situation is different. I have 5 queries that create 5 separate tables. Each query/table has a URL source, 5 total. How would you join all 5 queries in one and then enumerate through each with a delay? I don't even know where to start here. Not to mention that each of these URLs has authentication, different amounts of columns, and I would somehow have to connect them all in one function and then split them into 5 tables.

My issues isn't that I'm being limited by the API, the server hands over the entire csv file in one request. And completes the request in ~2 seconds.

During these 2 seconds, Power BI "spams" the server with 4 more requests (the other 4 URLs) which freaks out the server because it didn't even finish hading over the first but Power BI asks for another 4. 

If there's a way to enumerate through my existing queries, without rewriting the query from scratch and just set a delay between each query, that would be ideal.