Get all components of old page - using mapper configs update the components properties in new page

I have one Old page which was created on Aem6.0 or something. I want to extract the properties of old component like asset url, decription, and all. And update in new component

Approach:

1.) Workflow will hit the old page(5-10 pages) and extract the detail,

2.) Launch will triggered on referring new Page,

3.) The extracted details need to be updated in the launch Page.

4.) Using loop will do for each and every page.

How can I achieve step 1,2,3 or any other optimal step