The Red Devils have won five out of their last six games after a poor start to the 2019/20 campaign.
And McTominay says a number of honest discussions amongst the squad has lead to positive outcomes.
He told reporters: "In terms of the team, I feel we're much, much brighter.
"The signs are good, the signs are positive and we've talked about things that we can improve on and how we're going to try to improve by the end of the season, which is the business end of the season as well.
"It's a normal thing to have meetings and for everybody to discuss, that's a normal thing and the sign of a healthy dressing room.
"Boys speaking about it in the changing room, saying what they think we can improve on and what are good ideas as well.
"There's plenty going on, it's not a place to be quiet and in your shell. It's time for people to really step up and start doing their jobs as well."