In March I tore my MCL (right knee), and I've been off for three months. I'm trying to find a way to kinda help keep the weight off. I watch what I eat, but working out isn't really an option - yet. Any ideas to what I can do?

How about swimming?

I've read from http://www.chiroweb.com/archives/08/05/21.html

Yeah, I think swimming might be a good option for such a case. Otherwise you'd put too much strain on the feet.

Obviously, swimming is a good option. Otherwise, you can start Yoga in your home with the help of Yoga video. Switch to a healthy diet. Water sustains proper kidney function, which increases the liver’s fat burning ability, so drink plenty of water and try to avoid spicy foods and eat grapefruits. If you need some caffeine then try Oolong Tea which has the unique potential to block the fattening effects of carbohydrates. It has been effectively used for weight loss.