I found out from Fruitland Park P.O. that some mail delivery matters are best handled by leaving a note in your box to the mailroom people at our pool-postal complex. (For example, if doing a Mail Hold card for while you're out of town, TV mail people at our pool/postal station hold it THERE, not at the post office, because so many TV residents come and go often. Basically they'll put the accumulated mail in one of the bigger lockers at your postal center and leave the locker key in your mailbox.)
For getting your mail once you've moved within TV, put a note in your new mailbox telling the workers that your mail must be still going to your old mailbox in TV. The workers at your pool/postal station will contact each other if your previous one was a different station, or if they themselves need to get it right.
For officially changing your address after a move, this at USPS website works great....it goes system-wide:
https://moversguide.usps.com/icoa/ic...execution=e1s1