Weight loss is basically about calories burned versus calories consumed OVER THE LONG TERM. From this perspective, the best thing you can do is to take things easy and let your calf recover as fast as it can, rather than risking reinjuring your calf by doing inappropriate workouts too soon.
But given you have recently established a routine of regular exercise, I can totally understand wanting to stay in that groove.
Perhaps a seated cardio workout? www.sparkpeople.com/resource/videos-detail