Thanks for your reply. Prior to installing Monterey from Big Sur the startup time was well under a minute...probably 20-30 seconds. I just now tried 3 startups. The first was unbelievably in one minute. But the next two were 3.5 minutes and 4.3 minutes (these have been like every other startup since the install). I did notice that the bar under Apple logo made it to about the halfway point and locked up. It stayed there until about twenty seconds from startup and rapidly finished the startup. I have removed everything from my startup folder except for Luna which is the app for using my iPad as the monitor for the Mini. Before, there were 2 or 3 other processes included in this folder. But, there wasn't a problem under Big Sur.
Maybe, since I had that single one minute startup, the system is re-learning itself...and the startups will get progressively better?