Saturday’s shock 1-0 home defeat to struggling Maidenhead United was a big set-back.
A win would have taken them back to the top of the National League but Orient fluffed their lines in front of an expectant crowd.
The O’s form is not encouraging - they have taken three points only once since New Year’s Day.
Edinburgh has always maintained there will be twists and turns but knew the home defeat was a massive opportunity missed.
“Obviously nerves are increasing and people start to get a little bit anxious,” he told the club’s website.
“But we’ve got to remain calm and composed and stay in the moment.
“We can’t look at anyone else apart from ourselves after losing the game like we did.
“We’ve come up short, we didn’t go and impose ourselves in the second half as we should have done.
“When we gave the goal away it was always going to be an uphill task. We didn’t show enough quality.
“I said to the players to not expect anyone to come here and roll over and have their bellies tickled or be fearful, this is people’s cup final.
“But that just can’t be an excuse for us.”