What detergent have you been using traditionally? If it's fairy, immediately send the bottle to the dishes, and start cleaning with a professional liquid like Squeegee off or Glass Gleam 3 or 4.
I've got zero spotting, this is my fourth day, and the windows are beautiful.
Fairy sucks for wfp, leaves a film behind on the glass, which breaks up and you have to keep rinsing and scrubbing to not leave spots. A professional liquid leaves minimal detergent behind.
Also start wiping the frame if your still trad, and detail the edges.