Dalvin Cook Dynasty Value

Should I trade dalvin cook in my 14 team superflex league? My team is essentially stacked but I do not want to be caught holding the bag when cook falls off. I know I need to upgrade my second QB spot and my depth overall. My Roster is:
QB: Brady
RB: Cook
WR1: Tyreek
WR2: Godwin (when he comes back)
WR3: Amon Ra St. Brown
TE: Kittle
FLEX: Jonathan Taylor
SUPERFLEX: Darnold
BENCH:
Albert O
Branden Bolden
Rashaad Penny
Juan Jennings
Robby Anderson
Boston Scott
James Washington
Albert Wilson
Ameer Abdullah
Jamaal Agnew
Taylor Heinike
Cam Newton
Taysom Hill
Ryan Fitzpatrick
Alexander Mattison