Deleting BoT Services Resource Group

I have a Resource Group which contains all the resources associated with creating BoT services like Azure App Service which will be powering this BoT, LUIS or QnA Maker, the application insights etc. Now, we would like to delete this Resource Group since we no longer need to use these services. But before that, want to take the necessary backup so that in future, if I need to re-create the instance, it could be done! Now, the question is which workload should I backup? If I go to all the resources in the RG, it gives me the option to backup only the App Service and the Azure function. What is the best way to take the backup in such a scenario and which services can be backed up?