When I deploy using the default CF template, I notice I cannot stop/terminate instances as they are recreated almost immediately because of auto scale conditions. Is there a way to stop these instances when I am not running the tutorial (like over night). Right now it looks like deleting the stack is the surest way but that means I need to recreate the stack every time I would like to restart. Any tips?

try setting MinVCPUBatch and DesiredVCPUBatch parameters to 0 when deploying the template, it should make it scale to 0

Thank you! How about sagemaker nb instances. I dont plan on using them just yet or very minimal.

there is a parameter

EnableSagemaker

that removes sagemaker stuff