The young Foxes must overturn their 3-0 first leg defeat to the Citizens if they are to become the first side in Leicester City history to make it to the final of the competition.
Peake will draw from recent performances, including a stunning comeback against Brighton and Hove Albion last time out, as a reason to stay positive ahead of the crucial clash.
“We’re hoping that we can bring back the deficit and go through to the final,” the Under-18s manager told Foxes Player. “That’s got to be the aim.
“We’re positive. We do need a positive start. The third goal that they scored made it a little different to how we’ll approach the game, but it’s still doable.
“We were 3-1 down at half-time against Brighton and managed to score three goals in the second half to secure the victory. That showed some determination.
“It would be a great achievement for everybody involved if we got to the final. These boys have put in a lot of work over the years.”
Wednesday evening will see the young Foxes play their fourth game of the competition at King Power Stadium, with three wins out of three on home soil so far this campaign.
Peake added: “We’re quite used to King Power Stadium now, so we’re looking forward to putting a good show on.
“The atmosphere was good against Birmingham and I’m sure there will be more people there this time. It should be a great occasion for our lads, whatever happens.”
TICKETS
There is FREE entry for Season Ticket Holders, but tickets will need to be activated on their Season Cards prior to the match. For full details, .
For non-Season Ticket Holders, Adults cost £3 and Concessions cost just £1.