Can you tell, what exactly is getting too large? Is it code? Is it something like a tilemap or sprites that sometimes get into the master prompt as bitmap (thousands of 1s and 0s).
From my Addon's settings you can select/deselect individual scripts/scenes from the export. There you also see what contributes most to master prompt size.
There is also an ignorelist for files or properties in the addon script.
If you find out and tell me what exactly is causing the large size, I can help you figure out the properties that need to be put on ignore.
Or is your problem that you have one large script that tries to do everything? Then you should prompt it to do a refactor. Turn the one script into multiple so one script is responsible for one thing("separation of concerns"). A starting point could be the architecture review prompt from the prompt library in the addon.
