Hi, @New-Builder ,
Welcome to the community!
Yes absolutely, you would need to add a table of the child records on the parent page, they you could select the relevant child record on the parent page.
Edit the parent Page (don’t edit the form on the parent page) and add a table to the page. You will be presented with a list of tables and relationships to choose from and you can select the appropriate child records from there.
Then in the new child table add an Edit action to edit those child record
The add your tabs to the parent page form and then with some javascript you can display “show” / “hide” the relevant child tables when a particular tab is selected. see this post for javascript…
Any issues let me know, Graham