Tokyo Gov. Yuriko Koike will take a few more days away from public duties on the advice of a doctor, the city’s government said Sunday, extending an absence that comes about three weeks before the capital hosts the Olympics.

Koike had been expected to return to work Monday, after taking a week to recuperate from severe fatigue. She was taken to a hospital last Tuesday but will remain hospitalized for a few more days, the metropolitan government said.

Koike, 68, has led Tokyo’s response throughout the coronavirus crisis, often appearing to adopt a more cautious stance than Prime Minister Yoshihide Suga’s government. She has retained relatively strong public backing, with 57% of respondents to a poll of Tokyo residents published by the Asahi newspaper on Monday saying they supported her.