Post CMC injury trade offer - 10 team half ppr

I’m currently debating trading for a new RB to hold me over until CMC comes back. A league mate just offered me David Montgomery for Dionate Johnson straight up. Do I take it or hold off given Diontae’s huge target share (and Julio’s potential injury)? Here’s the roster as it sits right now…

QB-Kyler
RB1-Jonathon Taylor
RB2-Mike Davis
WR1- Julio Jones (questionable)
WR2-Diontae Johnson
TE-Hunter Henry
FLEX-Calvin Ridley
D/ST-Titans D/ST
K-Jake Elliot

Bench:
Kenny G (questionable)
Chark (questionable)
Crowder (questionable)
Zack Moss
Hines
Corey Davis
Devonta Freeman
CMC (on IR)