Is There Any Way To Build Assets To Same Consistent File?

Hi there, we have an odd setup for our project where we have our application being tested in the field in locations with very bad internet and our issue is that if we ever need to update our application and rebuild it, we will have to push the multiple GB of data in the build even if we only change a single line of code. After building the project, some assets are stored in large sharedassets files. This means if we change a small file, there is a chance that a large sharedassets file may change. Is there a way to limit the size of these files? Is it possible to compile all the assets to their own separate file? I understand that this means I will have thousands of files instead of one large sharedasset. But that is preferable for updating purposes. Thanks