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In OS you could use shading controls switchable glazing:

OS Shading Controls

With this you could either assign a schedule to change the glass from a high SHGC to a low SHGC. This would be difficult to create this schedule but could be done. I would recommend using the control "OnIfHighSolarOnWindow" which changes the glazing based on the W/m2 solar energy. You can change the W/m2 solar energy setpoint and tune it to your liking.