I would think there would need to be some kind of trigger for when retail prices for classes of products “necessary for survival” - think food, clothing, shelter, energy kind of things - increases faster than inflation by some threshold over some period of time. Tripping that flag would result in some kind of more detailed human investigation, because maybe there are extenuating circumstances that would reasonably justify a price increase of that kind. There could also be percentage limits to price increases in certain situations. Different from fixed price controls, which are definitely a bad idea (see: The French Revolution), rather a kind of mandated slowing down of such increases to allow the economy a chance to adjust without having inflation go crazy.

To be clear, I have only just poured this all out of my own head. None of it comes from political or economic sources, and my ideas could very well have unintended consequences, because I am neither a politician nor an economist.