Although it is largely driven by food and 11  fuel supply disruptions and bottlenecks, mending supply always takes time. Several steps have been taken, demonstrating that price stability is a shared responsibility between the government and the central bank, but these measures will inevitably have gestations: they will show results only over a period.
1 From the speech "Monetary Policy in a Changing Economy", delivered 24 August  2018 at "Changing Market Structure and Implications for Monetary Policy" symposium sponsored by the Federal Reserve Bank of Kansas City, in Jackson Hole, Wyoming. 3/3  BIS - Central bankers' speeches