I would not disturb the plant now. Wait till spring. If you can dig it into the ground. The earth will act as a giant wick. Make sure the soil is stuffed inside the drainage holes to make sure there is a continuous connection between the soil in the pot and the ground. If you cannot bury it just let it be and do not water unless it is really dry.

I'd wait to repot, too. Repot when forsythia blooms in the landscape. Until then, be careful not to over-water. Toss a little snow on the soil from time to time during the winter and be glad you don't have a couple hundred plants, the soil moisture levels of which to monitor all winter long. ToC's advice is something I might have said myself, so of course I agree.

Al