Their inflation rate has improved significantly. It's just not at goal yet. Argentina got so bad that economists from Milei to Krugman would prescribe the same medicine. The question is how far Milei actually goes with this and if he has the political ability to get the budget balanced and a stable enough financial situation for the economy to develop.
Currently they've shown progress in that the banking system is able to set up mortgages for the first time in forever (used to be briefcase of USD)
Argentines Flock to Banks as Milei Awakens Mortgage Market
Bloomberg - Are you a robot?