"They are maturing with every game and they now know how to get 1-0 wins, which is very important," he said after the vital victory against Coventry City at the weekend.
"By getting the win we've brought a number of other teams into the reckoning at the foot of the table but we've just got to take care of what is in front of us."
Sky Blues boss Chris Coleman lamented: "It was criminal to lose the game with a goal 35 seconds into the second half.
"I told the players at half-time that Forest would come out and be in our faces but one of my players switched off and the ball is in our net.
"We just didn't defend properly and paid the price for it. "