Easter Monday's defeat to high-flying Preston North End left Phil Parkinson's men six points behind sixth-placed Chesterfield with a game in hand.
Although the Preston loss was a set-back for City's top six chances, Morais knows confidence levels are still high in the squad as they target a positive result at Gillingham to keep themselves in the hunt for a Play-Off spot.
Morais: "We are 100% confident still.
"Monday's game was disappointing but playing with only ten men against one of the top teams in the division was always going to be difficult.
"We are still in with a chance of making those Play-Off spots.
"We have characters within the squad who can push people on - strong characters - and everyone has to play their part now.
"We have a six-game season now and we just want to do ourselves justice."
After a frustrating few weeks recently for the Portuguese midfielder, Morais is targeting a positive end to the campaign on a personal level as well.
Following a problematic knee injury which troubled him throughout February and March, Morais also had to still out three games last month due to a red card in the F.A Cup quarter-final replay at Reading.
Morais admits, however, the Reading red card was in someways a blessing in disguise as it gave him the opportunity to finally get on top of his knee problem.
With the injury and suspension now behind him, Morais wants to get back on the front foot.
Morais added: "The knee knock I picked up at Leyton Orient wasn't an easy one to get over with.
"It was frustrating but the suspension did actually help because when I first came back (from the injury) I wasn't really completely ready.
"It was difficult but I worked hard with Nick (Allamby, Head of Sports Performance) and Matt (Head Physio) while I was suspended and that was really beneficial for me.
"I feel a lot stronger and fitter and in a lot better condition.
"It has been a frustrating little quarter of the season recently for me so I want to try and brush that aside a bit mentally now.
"There is six games to go, all to play for, and I want to get back to the form I was showing before my injury."