NEW DELHI - Indian refiners will cut their monthly crude loadings from Iran for September and October by nearly half from earlier this year as New Delhi works to win waivers on the oil export sanctions Washington plans to reimpose on Tehran in November.India's loadings from Iran for this month and next will drop to less than 12 million barrels each, after purchases over April-August had been boosted in anticipation of the reductions.The United States is renewing sanctions on Iran after withdrawing from a nuclear deal forged in 2015 between Tehran and world powers. Washington reimposed some of the financial sanctions from Aug. 6, while those affecting Iran's petroleum sector will come into force from Nov. 4.India, Iran's No.2 oil client behind top buyer China, does not recognize the reimposed US sanctions, but winning a waiver from the restrictions is a must for New Delhi to protect its wider exposure to the US financial system.India's oil ministry in June told refiners to prepare for a "drastic reduction or zero" imports from Iran from November."Some refiners have either already exhausted or front-loaded their term contract to a large extent, which allows them the flexibility to go to zero if required, or until clarity on the waivers emerge," Amrita Sen, chief oil analyst at Energy Aspect, told Reuters.Washington will consider waivers for Iranian oil buyers such as India but they must eventually halt crude imports from Tehran, US Secretary of State Mike Pompeo said last week in New Delhi after a meeting of high level officials.The Indian government, already facing a backlash over a falling rupee and record high fuel prices, does not want to halt the oil imports from Iran as the Islamic republic offers a discount on oil sales to India.Government sources said India made this point clear in last week's meetings with US officials and remains engaged with Washington to work out waivers on its oil purchases from Iran."We have a special relationship with both the US and with Iran, and we are seeing how to balance this all, and also to balance out the interest of the refiners and end-consumers," said one of the government officials.But if Washington adopts a tough line, India would have no other choice than to end imports from Iran, they said.India lifted about 658,000 barrel of oil per day (bpd) from Iran in April-August, according to data obtained from trade sources by Reuters, and the cuts projected for September and October would drop the daily average over those two months by about 45 percent to 360,000-370,000 bpd.Indian oil refiners have already given the October loading plans to the National Iranian Oil Co (NIOC), sources familiar with the loading schedule said.Top refiner Indian Oil Corp wants to lift 6 million barrels each in September and October, while Mangalore Refinery and Petrochemicals would load 3 million barrels each for those two months, the sources said.IOC would also lift 1 million barrel for its subsidiary Chennai Petroleum Corp in October, they said.Bharat Petroleum Corp would lift 1 million barrels in September and skip purchases in October, a company source said on Tuesday.Bharat Petroleum has already drawn more than its fixed volumes - the amount it is obligated to purchase - that were contracted for 2018/19, its chairman said on Tuesday.Nayara Energy, part owned by Russian oil giant Rosneft , plans to lift 1 million barrels each in September and October, the sources said. But the refiner began reducing its oil imports from Iran in June and aims to completely halt purchases from November.Hindustan Petroleum, Reliance Industries and HPCL Mittal Energy (HMEL) have no plans to buy from Iran in September and October, they said.India refiners - excluding Reliance and HMEL, which do not have term contracts with Iran - will together lift about 73 percent of their fixed contract volumes from Iran by end-October, the loading data showed.IOC, Nayara and MRPL did not respond to Reuters' emails seeking comments.