Sync limit between CRM Plus and Campaigns

Sync limit between CRM Plus and Campaigns

I have been working on cleaning up my sync and managed lists over the last few days. I noticed this afternoon I was down to "5 remaining syncs for this month". A few of my syncs were being done "daily" that didn't need to be done that often so those were changed or deleted. It seemed that last week I still had 39 syncs left for the month. Is that number (5) left a result of those syncs? And when does the month start? My monthly renewal starts of the 13th of each month.
Along those lines. . .
So my understanding from what I have read is the "best practices" is when I create a new sync to a mail list is to do an "intimidate" sync then come back after completed and set a regular schedule for that sync. Is that what I should be doing?
I have attached a screen grab of my syncs that are left.