Hi @yaeger7032,
Per my research, I have found following article about move wokflows to Power Automate.
Using Power Automate for Project Lifecycle Workflows in Project Online – Part 1
Using Power Automate for Project Lifecycle Workflows in Project Online – Part 2
Using Power Automate for Project Lifecycle Workflows in Project Online – Part 3
And there is only a 100 api calls per minute throttling limit in Project Online
https://learn.microsoft.com/en-us/connectors/projectonline/#limits
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