Wait wait wait... Reduce the size of the tank? That just makes it easier to blow up! Make it so large that even if another tank blows a hole through it, there's still a lot more tank left to kick ass! Example:
We could have lab grown organic automatons, controlled via LLMs embedded in a neuralink. They will be considered non-human and therefore may serve as emergency rations. At the discretion of the tank commander they can be detached and used for eg minefield discovery, targeting consensus, or as "meat shields" as it were.