We filled out a temporary address change when we were in Florida in Jan. and Feb. (I can't remember if there was a limit on the time allowed.)

Anyway, we had it start on the day our rental started and planned it to stop about one week before we left Florida. We filled out a card to hold our mail for the last week. Only first class mail was forwarded.

It all worked out well, and it was nice not having all the "junk" mail.