Unable to post to subsites

We were previously publishing Amplify to a SharePoint subsite but it looks like Microsoft has recently taken this away. This subsite has existed for quite some time and has a ton of content. So, the idea of migrating to a new hubsite and the impact that could have on links, pictures, etc. makes me nervous. Has anyone else run into this or have a workaround for publishing to a subsite?

Was hoping to maybe publish to the main site and then move the site page down to the subsite, but it doesn't look like that is easy to do either.