United won five of their last six matches in all competitions to boost the outlook at Old Trafford.
And McTominay insists: "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.
"We always have meetings [to discuss formations and tactics], that's normal. 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 among 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."
The Scotland midfielder added: "I think people forget that we have had a lot of injuries as well, and you can see with Anthony coming back what a difference he makes. Which is what the manager has said about him as well.
"I do think we've coped relatively well with a small squad and a lot of boys playing a lot of minutes in a short space of time.
"Everybody wants to play and that's the sign of a healthy dressing room.“