None of that advice is different than you would give in any other period. You would still pick high interest savings for your emergency fund. You would still be aware of the true cost of cars and out more down if the financing price is too high. You would still refinance your mortgage if rates go down.

Fundamentally, there is no change in financial advice between high inflation or low inflation or deflation, because none of those are controllable through your personal financial choices. They just happen.