Brissett (knee) remained limited at practice Thursday, Andrew Walker of the Colts' official site reports.
Brissett, who is bouncing back from a sprained MCL, has encouragingly logged back-to-back limited sessions, but his status for Sunday's game against the Dolphins has yet to be solidified. Friday's practice will thus be a pivotal one for Brissett, but if he's ultimately deemed unable to go this weekend, Brian Hoyer would be in line to fill in at QB for the Colts.