Upvote:2
Assuming this is 2.55pm (and not 2.55am) and it's on a single ticket, that should be fine. You can check average wait and max wait times at immigration here: https://awt.cbp.gov/ Fort Lauderdale in the afternoon should not be more than one hour.
A lot depends on your citizenship, type of document, airline status, Global Entry or equivalent, TSA PreCheck, etc.