Kenny Jackett wants to see Pompey continue to apply pressure on the sides above them.
Victory over Scunthorpe at Fratton Park last week closed the gap on second-placed Barnsley to just four points.
Next up is a trip to Shropshire to face a Shrewsbury outfit who are battling to beat the drop from League One.
And Jackett knows that his side have to keep winning if they want a chance of securing automatic promotion.
The Blues boss said: “As far as you can, you have to prepare for one game at a time. All of your energy has to be focused on the next one.
“But when you look at the big picture, it does change slightly because we’re going to need a high number of points from the 24 that are still available.
"We’ve crept into the 70s now in terms of points and know that if we want to go up, we’ll need to be around 90."
“We’re four and nine respectively off the sides that are currently second and first, so we have to keep pushing and know it’s still possible.
“But if you don’t get your own form sorted out and pay enough respect to your opponents, then it won’t happen.
“We’ve crept into the 70s now in terms of points and know that if we want to go up, we’ll need to be around 90.”
Shrewsbury reached the play-offs last season, but currently find themselves a single point above the relegation places.
Jackett said: “The bottom half of the season is so tight – it’s unbelievable. There are a number of teams that will need points on the board sooner rather than later.
“Shrewsbury got a great win against Wycombe – one of their competitors – at the weekend and we lost twice to them twice last season.
“We understand they’ll be fighting for their lives, but have to show our quality and it’s an opportunity for us to keep pushing for those promotion places.”
Viv Solomon-Otabor (calf) and Ronan Curtis (finger) are both sidelined for Saturday and face a race against time to make the Checkatrade Trophy final.
Jackett said: “Viv certainly won’t be fit for the Shrewsbury game and I doubt he’ll make Wembley. I’d suggest it would be the week after that before he’s available.
“Ronan’s very positive about training in the middle of next week and will have the stitches out next Tuesday.
“He tells me that he’ll be training on Wednesday morning and he’s got a good attitude. There are a few ‘ifs’, but hopefully he can have a few days back to put himself in contention. We’ll have to see.
“Dion Donohue had a groin injury in the game against the navy earlier in the week and that will keep him out for Saturday.”