Given the complexity around the different programs and the way they work for you and your clients, once you've made the choice it is locked.
Please ensure that you read the questions and answers closely when choosing your program so that you make the correct choice.
If you've created some training in the program and need to move it you can use templates to do so easily - https://intercom.help/fitr/en/articles/4100792-use-templates-in-my-programs
Thanks
The Fitr Team.