QB Fixings?

Looking for some advice on what to do about my QB spot. Drafted a QB in something other than double digits for the first time with Cousins. I know he consistently starts slow, but I’m wondering how concerned I should be. Should I be looking to pack him and say James White for a guy like Matt Ryan or Rodgers? Roster is as follows.

QB: Cousins
RB: Gurley, White, Cook, Martin, Kelley
WR: D. Adams, OBJ, D. Thomas, Golladay, Cupp
TE: Clay
D: Baltimore

Any advice is appreciated.