As post 2 states, older stuff has poor fuel control and need more frequent oil changes.

Given you are in FL, do you park the car in the " winter " months? Changing oil before storage prevents acidic oil from attacking bearings and metal parts.

Once a year / 3 k miles should be enough. I'd pull an oil sample at 6 months / 1,500 miles and have it tested then decide if annually or 6 mo is the best time to change.

In any event, be sure to drive the car to full operating temp ( like 15 minutes minimum ) not just start car and idle it in the garage as not getting up to temp causes more damage than letting it sit.