Wine IS a different beast than beer. Sometimes it ferments quickly and sometimes very slowly, and with very little apparent activity, and you check it and it's at .990!
I'd follow the advice of Maine Homebrewer if you're concerned- but I'd probably just let it sit until the lees get kind of thick and need to be racked and check it then, maybe in 30-45 days or so.
Broken Leg Brewery
Giving beer a leg to stand on since 2006