The Argentine peso has lost more than 40% of its value against the US dollar this year and inflation is rampant.
The IMF confirmed on Wednesday it was looking to strengthen the arrangement and changing its phasing.
“I stressed my support for Argentina’s policy efforts and our readiness to assist the government in developing its revised policy plans,” Christine Lagarde, the International Monetary Fund’s managing director, said in a statement.
Investors are concerned Argentina may not be able repay its heavy government borrowing and could default.
Correspondents say the decision to speed up the IMF bailout smacks of growing desperation.
When the terms of the loan were agreed in May, President Macri said he expected the economy to recover and did not plan to use the money.