Wolves have been the standout team in the division but Douglas - who set up both goals at Molineux - has insisted that the club cannot afford to "switch off".
The 28-year-old told BBC WM: "Nuno is very in depth tactically and we're reaping the rewards.
"It's good to have a variety of different ways of scoring goals. It's nice to have been involved, but the important thing is the team to keep winning.
"It's important that we don't switch off. The pressure's on us at the top to keep getting better."
Douglas has made 12 appearances in all competitions since moving to Wolves during the summer.