Decoy Spreads

Hello I am newer to duck hunting and am having trouble getting birds to land in my spread. It’s late season here in New Mexico and at the moment I’m only running 6 decoys (2 Drake mallards 2 hens. 1 of drakes is a mojo feeder) about 30 yards out then Drake and hen mallard on jerk rig 15 ish yards out. Any spread tips would be appreciated!