One solution would be to organize group meetings of all the candidates. This could be a phone call or, even better, an online meeting with visuals. You can use the call to hear questions, answer questions from the group and to showcase one of the more successful or “on-track” projects. This is a good way to maximize the exposure of the group to a good sample project, while creating a little peer pressure to bring all projects up to date. Keeping up the momentum requires a “drum beat” of check-ins. People need to know that on “every other Thursday”, they have to submit their project status to the online group that helps. It also helps to publish these updates to the larger group including the sponsors. That creates a whole other level of peer pressure that creates a call to action. Good luck!