The winger, whose impact fell away after ankle surgery last August, scored his second goal in two pre-season games at Stirling Albion on Sunday.
"When you're young and there is a lot expected of you, it's a lot of pressure. I'm trying to take that away from him; he needs to concentrate on enjoying football," said Stubbs of the 19-year-old, who scored one goal and set up another in Hibs' Scottish Cup semi-final win over Falkirk. "His confidence is growing."
Stubbs also believes Paul Heffernan will be ready for Hibs' Petrofac Training Cup tie with Rangers on August 5 despite a thigh injury keeping the striker from playing any warm-up matches.