If you have six hours to accomplish six learning objectives, do not allocate one hour for each objective.
Instead, think about what the learners may already know, and then check for their level of learning, using an interactive exercise, such as a discussion question, a questionnaire, or a case study.
Working in small groups, the participants will have an opportunity to demonstrate their knowledge and/or prompt each other to remember the information.
In this fashion, you may be able to cover two or three of the learning objectives in an hour or so. This will leave more time for what is truly new learning for the participants to be sufficiently taught and practiced.
May your learning be sweet.