Once you’re done with all the labs, you should delete the SageMaker Notebook instance to avoid incurring additional charges. Note that deleting your instance does not delete the data in your S3 bucket. The data persists in Amazon S3 until you delete it yourself.
To delete the notebook instance use the steps below:
Under services search for “Amazon CloudFormation”. Make sure you have selected the correct region.
From the list on the left side, select the stack you created.
On the top right side, click on “Delete” button. This will clean up your SageMaker Notebook instance and corresponding IAM role.
Make sure to follow Removing the demo application instructions for Custom Labels Demo Application.