Tight, tight, tight

Ok, so I've had this pair of jeans for awhile. They're miss sized or something, because all other pants this size fit me very loosely. This pair, up until today, were so tight I couldn't even button them. Well...today I can zip them. They're still tight, but they're zipped and buttoned. Here's my goal...I want them to be loose by the end of March. Think I can do it?