The Newcastle United youngster - on a season-long loan at Oakwell - has adapted well to life in the Championship after a spell at Coventry City in League One last term.
The 20-year-old has netted five goals in 17 Championship starts, but only twice in the last four months.
But Reds manager Heckingbottom has been impressed with the striker’s work-rate as he develops his partnership with Tom Bradshaw.
“Nobody works harder,” said Heckingbottom. “We are doing lots of things with him, watching videos to try and open his eyes to different types of goals he needs to score.
“We have jumped up a league, he has jumped up a league, and he doesn’t just want to be an impact player.
“He wants to score different types of goals, and is definitely a player people will try and target and try to stop. You then have to adapt, score different types of goals.
“He is in one of those runs where it’s just not quite going his way. That can change at any point.”
Next up for Barnsley is the visit of Mick McCarthy’s Ipswich Town on Saturday.
Heckingbottom hopes to have the same squad to select from, after picking up no new injuries in the midweek 2-1 loss at QPR.
He said: “We have the usual knocks and bruises, but hopefully we will have everyone fit for Saturday.”