The Blues, who started this season as Championship promotion favourites following relegation from the Premier League, currently find themselves fourth in the table and six points behind second-place Middlesbrough.
There are two games in hand to come on most though, with home clashes against top-two rivals Hull, Millwall and Middlesbrough part of the schedule.
Speaking ahead of tomorrow’s match against Swansea City at Portman Road, McKenna said: “I think there’s still such a long way to go. I know it feels closer and everyone’s waiting for that last bit, but Martyn (Pert, assistant manager) said to me before the game on Tuesday night, and he was right, there’s a third of the season left. Going into Tuesday night, it was almost literally a third of the season.
“It’s an awful lot of games left (14) and I don’t think we’re even right in the spell yet of the last bit of the season where you’re thinking about how the teams around you do, how many points and all that. I don’t even think we’re there yet.
“We in a spell of seven games in 21 days. We just have to focus on each one. We have to focus on delivering performances by how well we prepare and how well stick to our processes here.
“It’s about going into each match, giving everything, trying to get the best result we can on the day and then moving on to the next one.
“You look at our schedule in particular, with the couple of games we have to catch up, and say that now is not the time to be thinking about the league table at all. When we get to the international break (after the Millwall home game on March 21), it’s probably at that point, when there’s eight games left, that maybe we can have a look at where we’re at and think about what the run in might look like.
“But honestly, at the moment, it’s just next game. It’s Saturday, learn from Wrexham, go to Watford, do the best we can, learn from that and then take on Swansea.”