Change WP default “Heading” (for H2s, H3s, etc) into GB “Headline”

Hi!

My workflow to create new posts is to copy the Markdown from Notion and paste it into WP. When I do this, all the subheadings are automatically set to the WordPress defaults. I must go in and manually convert each of them into the GenerateBlocks equivalent Headlines.

Is there a way to make the paste automatically convert the Markdown into GB Headlines instead? Ideally, with a Global Style already applied.

Thanks!