Hierarchical category permalinks

I have a question. For example I have categories and sub categories like:

Health
-> Weight Loss
-> example.

Now my permalink for sub category weight loss is like:
https://www.example.com/category/health/weight-loss

and permalink for sub sub category “example” is:
https://www.example.com/category/health/weight-loss/example

But I want to show the permalink when visiting sub category “weight loss” like:
https://www.example.com/category/weight-loss

Same with sub sub category.

I know I can do this from the categories section by removing “Parent”. But I don’t want to do this. Is there any method of changing the permalinks via any htaccess code or any other PHP code?