I guess there are a few options here - one is the fear of making of a mistake. Are the kids or parents having a go at the kids if they concede a goal or miss a pass? That's one to cut out as if the kids are worried about it then they'll panic and ignore all the good work in training. 

Is it that training isn't the same level of intensity? in which case as has been said, overloads help here. 

Our team were a little like this and the one thing that helped the most was playing 5-a-side short games. We had three teams, three minute matches on a small pitch (a half of a third of an astronaut pitch) and we rotated the teams, not just winner stays on. We picked the teams to be even. This short fast passing focussed on control and movement and really brought up their confidence to attack quickly, but also to turn the ball over quickly too. It took a while (by no means was it overnight!) but now they're immensely confident with knocking it about. 

I guess there are a few options here - one is the fear of making of a mistake. Are the kids or parents having a go at the kids if they concede a goal or miss a pass? That's one to cut out as if the kids are worried about it then they'll panic and ignore all the good work in training. 

Is it that training isn't the same level of intensity? in which case as has been said, overloads help here. 

Our team were a little like this and the one thing that helped the most was playing 5-a-side short games. We had three teams, three minute matches on a small pitch (a half of a third of an astronaut pitch) and we rotated the teams, not just winner stays on. We picked the teams to be even. This short fast passing focussed on control and movement and really brought up their confidence to attack quickly, but also to turn the ball over quickly too. It took a while (by no means was it overnight!) but now they're immensely confident with knocking it about.