Package RoJo/Moss for upgrade at RB?

14 team league, 0.5ppr. Currently 2-0 but as always in our 14 team league, RB depth can be tricky.

RBs: Jacobs, Carson, RoJo, Moss, Damien Harris

RoJo is trending down. Hoping Harris has upside but NE backfield is tough. Thoughts on trying to package RoJo and Moss for an RB? David Johnson owner has limited RBs. Who else to target? Or should I just stand pat and hope Moss comes around?