Robins has made an immediate impact since he replaced Simon Davey in early September. When he took over the Tykes were bottom of the table without a win from their first five league matches.
The former Rotherham manager told the Sheffield Star: "We're going to be working hard over the next week or so, the international break is not a break for the players.
"But what it does do is give me more time to work with the players and keep building. There's always room for improvement."