The Lions failed to win any of their first six games of the Championship season before victories over Blackpool and Charlton Athletic respectively.
"It was a huge team effort against Charlton and once we went in front you could see how much the players wanted it," Robinson is quoted as saying by Sky Sports News.
"We wanted to back up Tuesday's result against Blackpool and we didn't really need any motivation coming into the game.
"The intensity we've shown in the last two games is our benchmark now and we have to build from here and try to keep pushing up the table."
Millwall return to action on Saturday when they entertain Leeds United.