Suggest Treatment For Grade 2 Ankle Sprain

A couple weeks ago in football practice I had rolled my ankle and it immediately started to swell like a balloon. The swelling has gone down quite a bit, but it still has not gone back to normal. I have been diagnosed with a Grade 2 Sprained Ankle but I would think that I should be able to return to regular practice soon. I have been doing therapy which includes band exercises, biking, walking on the treadmill, and walking through water. How long is it going to be until I can resume normal football activites?