Some commenters seem to be misreading OP's post as asking what are your preparations for an upcoming UBI type of implementation. I believe OP is actually asking what are your preparations for a scenario in which jobs are scarse and UBI is not yet implemented.

I am making as much cash as I can on my online business, and stashing it all up in broad market ETFs. Next, I intend to branch off into research on engineering fields in computer science and biology, as science roles requiring actual innovation will likely be the last to be replaced.

The rule of the game is that you need to make as much money within the next decade or so, especially if you are sub 120 IQ and not on a role that requires constant innovation, as jobs below that threshold will get more and more scarce. I've posted about it recently here on this sub. The other alternative is settling for manual labor jobs, as opposed to desk jobs, as those are still likely to be competitive against the 70k USD that you would spend on a robot while its AI controller is not yet too dexterous.