What is the best way to deal with HTTP 429 - Throttled - requests with PnP ?

[MartinHatch]

I have a script where I iterate through 22k items in a CSV file and update document sets for each item.

So I'm basically repeatedly calling

Set-PnPListItem -List $listName -Identity $listItemId -Values $itemValues

However, every now and then the operation fails with HTTP 429 - Too Many Requests.

Is there a standard way of capturing this and identifying the Wait/Retry time which I understand would be in the response header.