Hi Asia
Yes, it's very possible, though it may require considerable effort. You can use a few different methods.
How are your courses built? Do you use a proprietary system, or do you use off the shelf tools like Articulate Rise?
If you use a proprietary system to build your courses, the simplest approach, which I have used successfully for nearly a decade, is to place all course content on an external CMS. The SCORM package that gets uploaded to the LMS would just contain a manifest, an index.html file, and a snippet of JS that tells the course to load your external content when the course is launched. You'd also need to configure your CMS to allow cross-domain requests, and configure security rules to prohibit anyone from viewing the content unless it's loaded from within the course.
If you use off the shelf software like Articulate, you can still do what's described above, but it gets more complicated.
Another option is to skip SCORM and use LTI to connect your external content to the LMS. LTI is probably a safer bet than AICC these days, AICC is older than SCORM.
- Philip