Looker Studio - Time series line chart not using all dates defined in Date Range Dimension

I have a time series line chart set to display daily data by ISO Weeks. When I set the date range from March 1 2025 to March 31 2025, it only shows 5 weeks (Weeks 9 - 13) instead of 6 weeks (Weeks 9 - 14, ISO Week 14 starts March 31). I have no qualms about ISO Week 9 being included (Feb 24 - Mar 2) but how can I make it so that Week 14 is also displayed?