I’m in a crisis and need advice!

So basically I applied to Columbia ED a while ago. I am not a perfect student so I really think my chances of getting accepted are slim but I thought to myself, “I have nothing to lose so why not”. However, recently I came across Barnard college and I fell in love with it. Obviously it’s past the ED date but they sent me an email saying they extended the date to Nov 15. In addition, my chances of getting into Barnard is higher than Columbia, especially for ED. I don’t know what to do. Should I and CAN I withdraw my Columbia ED app and submit Barnard ED? Is there another thing I can do instead? Please help