The accumulation of condensate on plastic windows after the start of the heating season often becomes a problem. In this case, water can stagnate on the windowsill or run down , damaging the flooring. But you can quickly fix the situation.
This will help the usual PET film 0.5 mm thick.
Cover the frame with double sided tape. Paste on top PET film. It has a milky tint.
Remove the top protective layer. The film will become transparent. The amount of light entering the room , this method will not affect.