How to avoid exceeded number of operations allowed per minute for weekday automations?

[Royan Bartley]

We are on the premium plan.  We have several automations setup.  6 run every weekday.  In addition, about a dozen run one day a week, so one or two additional each day.  This morning I noticed a regular daily task was missing.  Checked the activity log to find this message from about 3AM this morning:  "You've exceeded the number of operations allowed per minute."  This message occurs after 6 operations ran successfully.

1) We didn't add in anything new & this worked last Thursday.  Why did this happen and how do I prevent this?  I don't care when these run overnight, just that they do!  They could be spread out over time if that's the issue but how do I do that when created to run on a certain DOW?

2) How do I know in the future if this happens short of noticing that something is missing?

[Royan Bartley]

I have now put a time on all our automations so they shouldn't be bunched up.
Is there a way to know when these fail in the future?