Joint-manager Jamie Coyle has called for Dartford to show greater resilience after another collapse away from home.
Darts conceded three goals in 15 minutes at the end of the first half of their game at Truro City on Saturday.
That mirrored what happened in their FA Cup defeat at Oxford City, where the home side rattled in three goals in 11 minutes.
Coyle said: “We’re looking at that. We’ve got to be more resilient because there have been times this season when we go a goal down against the run of play and we lose a lot of confidence.
“We’ve got to be stronger than that because we’ve got the quality in the squad.
“We’ve gone behind a lot this year and come back to win games so we’ve got to have that belief, especially when we’d come off the back of five unbeaten in the league.”
Dartford are back in National League South action on Saturday when they travel to Gloucester City.
Coyle said: “We’ve got to start looking at players who are going to be reliable in both boxes because that’s where we’ve really fallen down.
“If we put one or two of the chances away that we had in the first 25 minutes on Saturday, it’s a completely different feel around the place and it has a massive effect on the result.
“We’ve got to look at the players that are going out there because Gloucester’s a real tough place to go.
“It was horrendous when we (Welling) played there last year, it was like a hurricane. Our goalie took a goal kick, it went up to the halfway line and he caught it again.
“We’ll have to roll our sleeves up and have a battle. On top of that work ethic, we need a bit of quality in both boxes.”
Lee Noble returns for Dartford this weekend after missing the Truro game through suspension.
Coyle said: “There is a common theme this season that every game he hasn’t played in, we haven’t picked up a point.
“You look at the stats and he has such a huge influence on us as a team.
“He drives us forward and he’s a positive influence
when we’re out of possession with his drive and desire to press teams.”
Callum Driver is still a week or two away but Delano Sam-Yorke (calf) is back in training and Ryan Hayes is building up his fitness.