Pompey’s six-match unbeaten run has included four clean sheets – including in each of the past three games.
It is a stingy record that has seen them start to climb the League One table and progress in two cup competitions.
Mahlon Romeo has been a big part of a defence that have left opposition forwards feeling so frustrated.
And the on-loan Millwall right-back wants to ensure the Blues can continue their fine form when AFC Wimbledon visit the south coast this weekend.
He said: “We were struggling a bit with results a few weeks ago, but now we’re slowly starting to build them up.
“My form goes hand-in-hand with the team’s form and if we’re getting good results, then I must be doing something right!
"Us being at home now will naturally give us a boost, although we certainly have to make sure we stay sharp."
“We’ll be as prepared as we can be to face AFC Wimbledon next and we’ve been doing our analysis on them.
“It’s going to be a completely different type of game than Wycombe last week, when we spent half the time straining our necks.
“That was a really crazy test for us – I think I saw that the ball was actually only in play for about half-an-hour.
“It is demanding, especially compared to the Championship, but it’s something you have to get used to.
“Us being at home now will naturally give us a boost, although we certainly have to make sure we stay sharp.
“I just look at the next game as being the most important one – that’s always the way I’ve gone about it.”