Resizing AWS EBS Volumes: What is the right way to resize EBS Volumes or adding EBS Volumes without impacting the data?

I am trying to resize an EBS Volume on AWS EC2 Instance.

I noticed it kept destorying the EBS Volume when I was using version 14.6.

Now that I am using 15.7 I have observed it still trying to destroy the other EBS volumes.

Can you advise what I may be doing wrong? What is the right way to resize EBS Volumes or adding EBS Volumes without impacting the data?