I do something similar to yourself for all age ranges. Three thoughts; as someone else said dial back what you expect to get through. My second thought is sort of related to the first. Don't underestimate the level of insecurity you may encounter. Set your students up to succeed i.e. don't brain melt them so much that they feel rubbish about themselves.

Finally, if you do good work be pleased with yourself. The government money meets unrealistic business expectations for short term training is not a new story :-)