You're not alone ajc, I have been through as well with injuries with broken bone and all types of injuries. I wasn't walking for couple months, when I was good enough to walk I couldn't play. Just enjoy life besides football, basically just go out and have fun or whatever you do. Believe me, it won't be long, time does fly.
One thing I suggest though it's not required for you to do. They say weight training released growth hormones, so you would actually recover faster. And it really is true for me, because you will notice you that you're still feel physically fit even though you're injured, you gained muscle along with strenght, you grow nails and hair faster than usual(because growth hormones), you might grew a bit taller, you're bones, ligaments, muscle will be stronger(reduced future injuries), and when you're recovered it's much easier to get fit because you're working-out.
Since you're can't move your knees, you probably have to do upperbody program, then when you're recovered you should work on lowerbody to strenghten them for reducing future injuries. Trust me, it's not much to do, 45-60 minutes a day, 2 days a week.
And you'll playing sooner than you expected.