Best Ways to Add Beehiiv as Sub-Domain to Webflow Site

Hi all, not sure where to park this question, so I hope this is the right channel. I need to add our beehiiv website as a sub-domain to the main Webflow website. For context, here they both are. https://www.techsafari.io/ https://techsafari.beehiiv.com/ What's the best approach here? I assume I'll need to create a sub-domain on our hosting and then connect it to the beehiiv site, but any tips on the best approach would be greatly appreciated. For example, should I go with "blog.techsafari.io" or "techsafari.io/blog" Also, the reason we're taking this approach over the new website builder. My growth lead says the native beehiiv website builder's landing pages are too slow and we risk losing visitors as a result - is this true?