Changing from administration to data science could be an exciting career move, and I agree with Mi Gao that school and certification will be much more helpful than self-study or "bootcamps", especially on a resume. One thing to keep in mind is that a data science career will be much more numbers and math-focused- be prepared to do more calculations and critical thinking in your job! If that sounds fun to you then definitely pursue data science programs at the undergraduate level. Most if not all data science jobs require a mathematics-based undergraduate degree at a minimum.
James recommends the following next steps:
- research local schools with computer science/data science programs and what credits they may give for courses already taken in your administrative degree