Stevens is expecting a big atmosphere at London Stadium on Wednesday night and feels the Hammers have managed to turn their season around at just the right time....
It is really important that West Ham have put together back-to-back victories and Slaven says he can feel the confidence growing in the changing room.
With the form Chelsea have been in, especially over the last two weeks, it is important for West Ham to be on that level facing them when they are flying.
Chelsea are the in-form team but you have to anticipate that Conte is going to make changes to the side.
The Chelsea squad is a lot bigger than West Ham and if they make six or seven changes, they are still able to bring a number of internationals into the side.
But they have also got to get used to the new system and a number of the players coming in might not have been used to the system that he plays or been involved in such a big London derby.
That could work to West Ham's advantage and if they could contain them for the opening 20 minutes and even score a goal, Chelsea might have to change their formation of how they are going to play.
I think both teams are full of confidence at the moment and Slaven said in his press conference that he doesn't anticipate making a lot of changes. He is going to play his strongest available side and that will only benefit West Ham.
Slaven has changed the system recently and everyone looks a lot more comfortable. The wing backs are getting forward and it seems to be working.
They could probably do with a few more goals but if they can get over that problem then I think they will have a successful season and finish in the top half.
Victor Moses will be making a return to face West Ham and I have always thought he is a good player. He has been loaned out a few times but he has never done a bad job wherever he has been.
He has been given the responsibility this season of helping out the back three and is doing it really well. He is putting in tackles that I have never seen him do before. He has electric pace and is invaluable for Conte to have that kind of player. He is very versatile.
I found out that he has only played 100 Premier League games and he seems to have been around forever. He is having a great season and could be the feather in Chelsea's cap and could win a lot of games for them this season.
It should be a great game on Wednesday night at London Stadium and there has been a lot of hype about the match, but I hope the fans really get behind both teams and make it a special atmosphere.