Pompey have roared back into life with seven points collected from the past three games.
But Kenny Jackett knows his side cannot apply the breaks now, as they try to secure promotion to the Championship.
They are a single point outside the top two, with 20 fixtures still to play in this most squeezed of seasons.
A trip to Crewe is next up this weekend and Jackett believes Pompey can remain in the race.
The Blues boss said: “We’re confident in what we’re doing and want to keep pace with the sides at the top if we possibly can.
“Nobody’s got away from us yet and we’ve got seven points out of nine since those Hull and Lincoln defeats, but you need to keep up that level.
“Three teams will go up into the Championship and, ultimately they’ll be the ones that deserve it most.
“It’s a really good division and last season you had teams like Sunderland and Ipswich not even in the top six.
"We’re confident in what we’re doing and want to keep pace with the sides at the top if we possibly can."
“This time around there are 8-10 sides who it’s opened up for – and we’re one of them, so we need a big push.
“I do think we’re capable of that with the squad we’ve got here. There’s a good spirit around them and they have to be selfless as we drive towards the end of the campaign.”
Crewe won promotion from League Two last term and are currently just three points adrift of the play-off spots.
Jackett said: “They’ve got a very good home record – it’s the fourth best in our division – and have got some decent players.
“Their recruitment and development have been impressive and David Artell has done an excellent job there.
“Crewe have done well to re-establish themselves in this league after a few years away and it’s going to be a difficult game.
“It’s important we go there with a solid base, while also looking to get forward and cause them some problems.”
Jack Whatmough could return for Pompey after completing his three-match ban for a red card against Lincoln.
Jackett said: “We’ll need to give Rasmus Nicolaisen a bit more training, while Jack is a good addition for us, but James Bolton has done very well and we’ve been pleased with him.
“He’s played a big part in our recent results and should be congratulated for that. He’ll want to do everything he can to keep hold of that shirt.
“It looks like Michael Jacobs will be out for a couple of weeks and it’s a frustrating one. It could be a lot worse with a hamstring and we’ll make sure not to rush him.”