Hey @sarinata,
I’m sorry but we cannot tell or teach you how to do that as part of our theme support. We only guided you to remove the theme’s image sizes but that is even not recommended. We cannot provide support for fixing issues that will arise from the use of it nor providing further enhancements.
If you know a developer, please consult with him or her. Or, you can subscribe to One where we can answer “theme customization through code” questions .
Thank you for understanding.