Hello, sorry that it took so long for me to reply. Unfortunately, I don’t think that will work, because of the limitations of Lightroom for iPad. It does not work like Lightroom Classic. Specifically, Lightroom for iOS cannot manage photos in normal iOS folders/directories. It only manages images in cloud storage, and in its own local private/hidden caches of cloud storage.
Lightroom for iOS does let you create a “folder,” but that does not mean the same thing as in Lightroom Classic. In Lightroom for iPad/iPhone/web, a “folder” is simply a group or container to help organize “albums.” Albums are the same as Collections in Lightroom Classic, they are simply lists of images and not paths to the actual files on local storage. The files are not in local storage because whenever you load photos in Lightroom for iOS, they are uploaded to Lightroom photos in the cloud, not organized on the device. On iPad, Lightroom provides no working access to iOS folders (only for import to cloud or for export, not for direct editing).
You can still accomplish what you are doing, but it will work through the cloud, not locally. You can import photos into Lightroom on an iPad and it will let you browse them by date, and you can sort and rank. If Lightroom on iPad was able to successfully upload all imported photos to the Lightroom cloud, when you get home Lightroom Classic should be able to automatically download all the images from the cloud to the catalog that has syncing enabled.
In fact, Lightroom on iOS does not actually provide any easy way to transfer or sync images locally to Lightroom Classic. It is possible, but the process is complex and non-obvious because Adobe designed the workflow around Internet access and cloud storage.
If you require full local control over travel images with the direct ability for local transfer when you get home, without depending on Internet access or the cloud, you must use other iPad photo management software, not Lightroom. It’s the same situation if you need to edit from images on external storage connected to the iPad.