Can I set permissions on SharePoint list items in a way that they inherit permission of their parent list item?

I have inherited a SharePoint online site where there is a parent list and several other lists that are children of the parent list. The children list items are linked to the parent list item via lookup fields. The parent list items have unique permissions set up by workflows and REST api. Is there a way that I can implement permission on the child list item so that the child inherits permission of the parent list item. I am open to workflow or JavaScrip code solution.

Any idea?

faye fouladi