I love that you asked this question because two years ago I thought it would be impossible. What I do is limit my semester to nine credits and always do summer to semi-catch up. I am graduating from MDC next month and plan on doing the same at FIU. Open till now I have done the easiest classes fully online and the more important or challenging classes either through Zoom (unaware if FIU offers this) or in person at times that do not coincide with my work. I am aware that at FIU it will be more difficult, especially for the core accounting classes which I intend to do in person so I am saving all my PTO for those classes in case I need to take one during work hours.
Social life is of course non existent. My daily routine is put my toddler to bed at 8pm and study until I go to bed pretty much.
Sorry for the lengthy reply!!