I think... I think that might be the best way to go about this, yes.

[He picks up the dusty uniform and bundles it with the jacket, then apparently has a change of heart.]

Wait, Steven! Um... how do I say this.

[He separates the bundle and sets Sans's jacket down on the floor.]

Let's just put as much dust as we can in the jacket for right now, okay? It's... it'll be easier to carry that way!

[That's obviously not the real reason, but he's not offering any other explanations just yet.]