The Organization of the Petroleum Exporting Countries, Russia and other producers have since Jan. 1 implemented a deal to cut oil output by 1.2 million barrels per day. The meeting is to decide whether to extend the pact and whether to adjust it.

The new suggestion is that the Joint Ministerial Monitoring Committee, an advisory panel, meets on July 10, followed by OPEC ministers on July 11 and the combined gathering of OPEC and non-OPEC producers on July 12, the sources said.