The on-loan Manchester City winger sustained the injury after coming on as a substitute in a 2-2 draw with Dundee at Easter Road, but is closing in on a return to first-team action.
“He’s working on fitness and conditioning and he is pushing towards the back-end now,” said Heckingbottom.
“We just need to make sure he is fit to see out a whole game and last the minutes.
“It is another difficult one and he will be frustrated but the process was ongoing before I came in.
“If was to rip that up and the lad gets injured or does more damage, then I will have undone a lot of other people’s hard work.
“We will make sure he is happy that he is at a level he needs to be at before we try to get him back on the pitch or at least consider him for a place on the pitch.”