The English midfielder scored the winner in the 2-1 win over Brentford on Sunday, his first goal in eight months.
"He is getting back to his level," Rodgers said after the Brentford win.
"He worked so hard during the period he was taken out of the team and that was purely just to break the cycle he was in, be able to analyse his game.
"Huge credit to him, he has gone away and analysed himself and been honest with himself. He has worked so hard and we are starting to see the fruits of that."