Yankees should bench Didi Gregorius.

He's not hitting and his fielding has been off for him. That puts Luke Voit at first base. Voit otherwise might not make the roster.

It also puts these two infielders at their natural positions:
2B DJ LeMahieu
SS Gleyber Torres

It will make even more sense if Edwin Encarnacion returns healthy in a couple of days. This should be the starters by position:
Catcher: Gary Sanchez
First: Luke Voit
Second: DJ LeMahieu
Shortstop: Gleyber Torres
Third: Gio Urshela
Left: Giancarlo Stanton
Center: Brett Gardner
Right: Aaron Judge
Designated Hitter: Edwin Encarnacion

LeMahieu and Torres should field best at second and short respectively. Urshela is a very good fielding third baseman. Voit is a better fielder at first than LeMahieu.

At bat Gregorius is replaced by Voit and Encarnacion is assured a spot in the starting lineup. It's all pretty basic.