PHP Export form integration

Hi,

We have used your plugin for past year and is one of the most important plugins we use since we ship stuff by weight and your plugin helps use to export to new post statuses we create.

Since our site is now very large our php of 1024 is being ignored by the plugin and memory limit is exhausted @512 using runnow export method on a private backend form we utilise.

how can I create a form utilising the progress bar to keep memory limit low on exports. I did look at the php post methods you use but ideally would like to include() require() the full functionality of the plugin on a separate form page.