How to force automatic steps to trigger manually dynamically

[Reidar Brenna]

Some background.
I manage deployment pipelines that add, change or delete aws resources through terraform/terragrunt.
The pipelines generally run like this:

• step 1: review changes for environment
  <manual trigger>
• step 2: apply changes (additions, changes and deletions)

What I want to achieve:
In order to provide a more automatic ci/cd experience for the developers I want to eliminate the use of the manual trigger but only when there are no deletions detected.

Question:
Is this possible?