This other older topic (Window reflection/sun) explores this a bit. I just added a post suggesting putting a polarized sunglass lens in front of your cam. My first test is promising.
UPDATE: I put polarizing sunglass lens over my Wyze cam, and also blacked out the front panel of the camera only using a Sharpie. The blackout did remove cam from reflection. The polarizing lens did improve but not remove reflections of the white window shade. Much improved as it gives better view for a few more hours until sun is directly on the cam. I think other suggestions to ‘dress’ the window by placing a dark cloth behind the camera, between window and interior light colored shade is the only way to beat window reflections. Not a great solution given I also like to look out that window myself so I likely will live with a few hours of lost cam visibility.