There's only 2 ways to stop condensation, get rid of the moisture or lower the dew point. An old supermarket trick to lowering the dew point was to raise up the temperature. Stores that were sweating at 70 degF magically dried up when the temps were raised to 74. Also air circulation can help. If you have shades in front of your windows, try and raise them enough so that you get a little air movement underneath them, so the windows don't get quite so cold.
Larry & Cheryl Oscar, Louie, Ranger & Henry (our Springers)