Breida had three carries for four yards during Thursday's 31-13 win over Jacksonville.
Breida had seven carries for 37 yards during Sunday's 33-28 loss to the Bills.
Breida rushed five times for 22 yards and wasn't targeted in the passing game in Sunday's 21-11 loss to the Patriots.
Breida is the favorite to lead Miami's backfield in receptions and could even occasionally line up as a receiver, Cameron Wolfe of ESPN.com reports.
Breida hasn't discussed a contract extension with the Dolphins, Barry Jackson of The Miami Herald reports.
Breida was traded for a fifth-round pick to the Dolphins on Saturday, Adam Schefter of ESPN reports.
Breida signed his restricted free agent tender Thursday, Adam Schefter of ESPN reports.
Breida is a candidate to be traded this offseason, according to Matt Maiocco of NBC Sports Bay Area.
The 49ers are tendering Breida at the second-round level, Dianna Russini of ESPN reports.
Breida finished the 2019 season with 123 carries for 623 yards and a touchdown, also contributing 19 receptions for 120 yards and another score in 13 games.