As you can see, you've already on track for chasing your interests.
One tip can give you is, attend some social activities with same industries, like WeChat Machine learning or data science group.
Build your social network, get contacts for people who have already working in this industries, and try to introduce yourself and get referral.
Sometimes, referral will bypass HR filtering and your resume can be presented directly to hiring manager or hiring lead who will be evaluating you based on your true skills rather than comparing background. And you may get chance to have fast track to the final interview.
Follow your heart, do not let yourself regret after couple of years.
Another thing will be try to get some industrial certificates like AWS, Google which can remedy your short of background.