I don’t think so I actually thought he was backing up too much
However taking on Sandhagen of all people in your first main event is a seriously intimidating ask. So in rounds two and 3, he backed up too much in my opinion and couldn’t establish grappling. He actually was out landing Corey backing up despite DC’s stupid spheel on backing up being exhausting, which is impressive when Corey is so much bigger. However I thought the size difference clearly played a factor, Lil Nurm proved he is ready and capable for the top contenders at Bantamweight but didn’t neccesarily do it impressively. I’d describe that as a tussle between both guys.