Kittle/Waller for RB Trade

I’m in a 12-team, 1/2PPR, re-draft league, sitting in 4th (4-3).

QB: Wilson
RB: Drake, D. Freeman, J. Jackson, M.Brown, Homer
WR: Adams, Diggs, Sanders, Hardman
TE: Kittle, Waller

Need help at RB so I’m looking to move Kittle or Waller for an RB1. Any thoughts on who I should aim for and whether to get rid of Kittle or Waller?