The Wales international had to watch on from the stands after picking up a one-game suspension for last weekend’s disappointing show against Bristol Rovers.
He returns to contention against the O’s, where Bolton will be looking to correct their course in front of another 20,000-plus gate at the Toughsheet Stadium.
“I couldn’t tell you how or why it has happened, but I think it has been more about us not playing to our best rather than us being outplayed or out-fought,” he said of the recent losses.
“We haven’t played to anything like the best of our ability over the last two games and if we can get back to the performance levels we had previously then I think we will be alright.
“There’s a bit more pressure now, potentially. But I think every home game we play there is big pressure on us because our home form tends to be around the best in the league.
“It’s a big stadium, a lot of home fans, teams are always going to see it as a cup final type of vibe. We know that every game is a pressure game because the teams around us are winning and we need to keep it up as well.”
Ricardo Santos will be suspended against Orient, taking up a vantage point that Sheehan did not enjoy behind the dugout.
“It is very frustrating, to be honest, if you can be involved or feel you should be involved then it can be very frustrating watching,” he said. “But you just have to support the boys and be in the dressing room, it is just what I think you should do.
“I know Rico will be disappointed but it was just a mistake. We all back him.
Playing in the position he does, last man, he knows any errors could be costly. But he will be back, no problem.”
Sheehan has plenty to look forward to in 2024, including the possibility of a European Championships with Wales, if they progress past the play-offs.
He feels Bolton’s style of football has helped him on the international front and is excited about what is in store.
“Sometimes you have to be at the right team, and I feel like I am at the right club and the right team at the moment,” he said. “I feel like the way we want to play and how the gaffer sees the game, that is what I have grown up with at Swansea. I think everything was put in place for me to come here and hopefully, as a team, we can keep going the way we want to go.
