The Bruins have just one preseason game remaining, on Saturday night at TD Garden against the Philadelphia Flyers (5:00 p.m. ET - NESN, 98.5 The Sports Hub).
Soon, more roster cuts will be made. There are a few young players who have yet to make their NHL debuts still at camp, including forwards Austin Czarnik and Danton Heinen.
Czarnik centered Matt Beleskey and Jimmy Hayes during Friday's practice.
"It can be kind of nerve-racking and I just hold him he's got to go out there and play and have fun with it," Spooner said of his advice to Czarnik.
While Czarnik received his first NHL call-up during the 2015-16 season (though he did not play), Heinen is entering his first full season as a pro.
"They're doing well, you know," said Spooner. "They're scoring goals and I'm very happy for them. They're playing well."
The duo skated together during Thursday night's preseason game in Columbus, with Beleseky on their left wing. Heinen was grouped with Dominic Moore, Riley Nash and Noel Acciari for Friday's practice.
"They're two guys with great skill," Beleskey said of the young forwards. "They make some good plays out there. Heins, for a young kid, he's got some good patience with that puck, so I just let them do their thing, and play their game."
With three points each during the preseason, Heinen (three goals through four games) and Czarnik (two goals, one assist through five games) have been soaking it all in.
"I'm just playing my game, enjoying it while I can," said Czarnik. "If it's meant to be, I'll be up here. If not, then I'll just have to keep on working and get up here, so it's just about going out there and having some fun."
The 21-year-old Heinen has seemed at ease ramping up his game for the NHL level, even if it's a big jump from the University of Denver.
"Those NHL guys are bigger, faster, stronger, so you've just got to bring your game up," said Heinen.