The Croatia international has not scored in his past nine appearances and his only strike since December 9 came against League Two Cheltenham in the FA Cup.
Such lack of form contrasts sharply with almost 12 months ago when the 27-year-old enjoyed a run of 11 goals in 14 matches to the end of the campaign which had many hailing him as the buy of the January window at a cost of just £5.5million.
It has cost him his place in the starting line-up recently and while Moyes accepts the player's confidence has been dealt a blow he is backing the forward to bounce back.
"I am not that cuddly a fella or one for putting my arm around you all the time but every manager has their own style," Moyes said. "I don't know if Jela is the sort of boy who would want me to do that any way.
"Any forward who has played the game and been through barren spells will tell you they practise more or don't do any in the hope it comes back without it.
"I think it is every man for themselves in that. We would like him to get his goals and lift his performances and if we get that it will be a big help to the team.
"The team need him. I said last week a lot of what we do this year will be determined by how well Jela scores between now and the end of the season.
"It is noticeable (his lack of goals) because everyone talks about it. We tend to be as honest as we can and not hide away from anything and at the moment undoubtedly we need Jela to find a way of scoring some goals.
"He needs to get a goal but I don't know if one goal will make everything right. If I saw him getting four goals in four games then I would start to think `This is what we want'. You have to find a way of making that happen again but we could do with him standing up and getting us some goals now."