Pompey are unbeaten on the road, but have work to do on their own patch.
Kenny Jackett’s side have already lost three times at Fratton Park this season – and now have three successive home fixtures ahead of them.
Crewe are the south coast visitors on Saturday, with Oxford following a few days later ahead of an FA Cup clash with non-league King’s Lynn.
Jackett is not looking past the first of those opponents at the moment, however, and is pleased to have a break from being on the road.
The Blues boss said: “We try to set our standards very high – and they have been right up there in recent weeks.
“It’s been a bit disjointed lately because of injuries and international call-ups, but you have to come through that.
“Now we’re looking forward to a series of home games after doing a lot of travelling and want to capitalise on that advantage.
"we need to get our form at Fratton Park back in order, so we’re looking to be at our best on Saturday."
“Crewe have beaten Peterborough and Oxford in recent games and do look like a really good side, so we’ll respect the great work that David Artell has done.
“But we need to get our form at Fratton Park back in order, so we’re looking to be at our best on Saturday.
“You also have a good look at your opposition, but I’m more focused on making sure we’re cohesive and playing to our strengths.”
Pompey will be able to make up to five substitutions from Saturday following a rule change by the EFL.
Jackett said: “It will affect things a lot. When we went to extra-time at Ipswich in the FA Cup, the fourth change helped us get over the line.
“That can be the difference between winning 3-2 on that day or losing 3-2, so it can make a big impact.”
Pompey are close to having a fully-fit squad to select from, with another player climbing off the treatment table.
Jackett said: “Lee Brown will be available for this weekend, although I’ve been pleased with Cam Pring’s performances since he’s been out.
“Ronan Curtis is a bit tired after flying back from starting for Republic of Ireland – and congratulations to him for that – but is fully fit.
“Ryan Williams picked up a hip injury at Plymouth, but seems to be okay and, barring Michael Jacobs, we’ve got everyone ready for Saturday.”