Are you claiming we’re AI computer programs and that real life is analogous to ChatGPT?

No, those are T2 systems and we're (at least) T3 systems, roughly speaking we don't have pre-programmed methods of learning and can generate behaviour from that, but we have pre-programmed methods of learning how to learn to generate behaviour. Notice the additional "learn". T4 if you count evolution itself as a further level, learning that which is pre-programmed in us.

Practopoiesis is currently the best model we have, incorporating all the neurological and psychological data we have in a cybernetic understanding of things respecting (as cybernetics generally does) issues of computability and complexity theory. Trying to replicate the information processing capacity of the human brain with our current AI tech, all T2 systems, indeed would require computers (or brains) the size of multiple planets. It'd also make us prone to forget how to play piano when learning to cook pasta as compartmentalisation of learning requires said capacity to learn how to learn, to encode things in distinct ways and not just smear everything into an overgeneralised whole, overwriting unrelated information.

Are information and consciousness synonymous?

Now that would be rather strange and terminally fuzzy. You could say that consciousness is a by-product of information processing. Best I can put it (and this is meditation experience, not fancy science) is that the field of consciousness is a point of different information processing systems coalescing, integrating their individual results. A committee meeting room of sorts. We like to identify with that and think it's oh so important but, eh, is it really? I mean the identification, not the coalescing and integrating. If the experience was not present but its function was still fulfilled, what would change in practice? Are you sure that none of those sub-systems contributing to your consciousness aren't themselves conscious, you generally just don't notice it because there's no need to? If your motor cortex cracks a knuckle and you're not around to notice it, did it really crack a knuckle?