It's the RATE of Inflation that has gone down.
A lot of us FREEPERS remember our math!
Prices, especially in a broad basket like the CPI, rarely go down.
You will see components of it (eggs, gas, etc) drop from one period to the next. But overall, the higher prices are baked into the system until there is a disruption. That disruption is usually stuff like war, peace, or something technology related.
We are stuck with the high prices for a long time.