I also check pricing on a fairly regular basis.
Yesterday, pricing for 4 of our 5 future cruises (MA mini-suite with Princess Plus) were anywhere from $500 to $3000 more than when we initially booked in the spring. But our cruise from Los Angeles to Auckland in 2023 dropped by $3000 and gave us another $200 OBC. I rebooked at the lower price at noon, and at 4 it had dropped another $200. This morning, it is back up $200.
Advice - take the lowest price you can get as long as you are getting the same amenities, location, OBC, etc. Then continue to check pricing prior to the cruise.