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University of the People has a free-ish CS program. You might look into that. It's zero tuition, but you have to pay $100/exam (or at least that's what it was when I was looking at it).

I have a background in physics and am a first-semester OMSCS student. So no formal CS training, though my day job is computational geophysics.

The r/OMSCS subreddit has excellent threads where folks list their backgrounds and whether they were accepted. It’s a great way to get a rough estimate on your acceptance chances.

You may want to check out the Online Master of Science in Analytics there also: https://www.analytics.gatech.edu/